FIR: make declarations marked with 'override' implicitly open

#KT-52236 Fixed

compiler/fir/analysis-tests/testData/resolve/diagnostics/abstractSuperCall.fir.txt

@@ -35,7 +35,7 @@ FILE: abstractSuperCall.kt
             super<R|A|>()
         }
 
-        public final override fun f(): R|kotlin/Unit| {
+        public open override fun f(): R|kotlin/Unit| {
         }
 
         public final fun g(): R|kotlin/Unit| {

compiler/fir/analysis-tests/testData/resolve/diagnostics/abstractSuperCallInPresenseOfNonAbstractMethodInParent.fir.txt

@@ -22,15 +22,15 @@ FILE: abstractSuperCallInPresenseOfNonAbstractMethodInParent.kt
             super<R|B|>()
         }
 
-        public final override fun toString(): R|kotlin/String| {
+        public open override fun toString(): R|kotlin/String| {
             ^toString this@R|/A|.super<R|B|>.R|kotlin/Any.toString|()
         }
 
-        public final override fun foo(): R|kotlin/String| {
+        public open override fun foo(): R|kotlin/String| {
             ^foo this@R|/A|.super<R|B|>.R|/B.foo|()
         }
 
-        public final override fun bar(): R|kotlin/String| {
+        public open override fun bar(): R|kotlin/String| {
             ^bar this@R|/A|.super<R|IWithToString|>.R|/IWithToString.bar|()
         }
 

compiler/fir/analysis-tests/testData/resolve/diagnostics/conflictingOverloads.fir.txt

@@ -30,7 +30,7 @@ FILE: conflictingOverloads.kt
             super<R|A|>()
         }
 
-        public final override fun rest(s: R|kotlin/String|): R|kotlin/Unit| {
+        public open override fun rest(s: R|kotlin/String|): R|kotlin/Unit| {
         }
 
         public final fun rest(s: R|kotlin/String|): R|kotlin/Unit| {
@@ -39,7 +39,7 @@ FILE: conflictingOverloads.kt
         public final fun rest(l: R|kotlin/Long|): R|kotlin/Unit| {
         }
 
-        public final override val u: R|kotlin/Int| = Int(310)
+        public open override val u: R|kotlin/Int| = Int(310)
             public get(): R|kotlin/Int|
 
     }

compiler/fir/analysis-tests/testData/resolve/diagnostics/propertyTypeMismatchOnOverride.fir.txt

@@ -24,7 +24,7 @@ FILE: propertyTypeMismatchOnOverride.kt
             super<R|A|>()
         }
 
-        public final override var test: R|kotlin/String| = String(Test)
+        public open override var test: R|kotlin/String| = String(Test)
             public get(): R|kotlin/String|
             public set(value: R|kotlin/String|): R|kotlin/Unit|
 
@@ -47,7 +47,7 @@ FILE: propertyTypeMismatchOnOverride.kt
         public final val value: R|T| = R|<local>/value|
             public get(): R|T|
 
-        public final override var test: R|T| = this@R|/E|.R|/E.value|
+        public open override var test: R|T| = this@R|/E|.R|/E.value|
             public get(): R|T|
             public set(value: R|T|): R|kotlin/Unit|
 
@@ -73,7 +73,7 @@ FILE: propertyTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override var rest: R|E| = this@R|/G|.R|/G.balue|
+        public open override var rest: R|E| = this@R|/G|.R|/G.balue|
             public get(): R|E|
             public set(value: R|E|): R|kotlin/Unit|
 
@@ -86,7 +86,7 @@ FILE: propertyTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override var rest: R|E| = this@R|/H|.R|/H.balue|
+        public open override var rest: R|E| = this@R|/H|.R|/H.balue|
             public get(): R|E|
             public set(value: R|E|): R|kotlin/Unit|
 
@@ -99,7 +99,7 @@ FILE: propertyTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override var rest: R|E| = this@R|/M|.R|/M.balue|
+        public open override var rest: R|E| = this@R|/M|.R|/M.balue|
             public get(): R|E|
             public set(value: R|E|): R|kotlin/Unit|
 

compiler/fir/analysis-tests/testData/resolve/diagnostics/returnTypeMismatchOnOverride.fir.txt

@@ -28,7 +28,7 @@ FILE: returnTypeMismatchOnOverride.kt
             super<R|A|>()
         }
 
-        public final override fun test(): R|kotlin/String| {
+        public open override fun test(): R|kotlin/String| {
             ^test String(Test)
         }
 
@@ -51,7 +51,7 @@ FILE: returnTypeMismatchOnOverride.kt
         public final val value: R|T| = R|<local>/value|
             public get(): R|T|
 
-        public final override fun test(): R|T| {
+        public open override fun test(): R|T| {
             ^test this@R|/E|.R|/E.value|
         }
 
@@ -77,7 +77,7 @@ FILE: returnTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override fun rest(): R|E| {
+        public open override fun rest(): R|E| {
             ^rest this@R|/G|.R|/G.balue|
         }
 
@@ -90,7 +90,7 @@ FILE: returnTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override fun rest(): R|E| {
+        public open override fun rest(): R|E| {
             ^rest this@R|/H|.R|/H.balue|
         }
 
@@ -103,7 +103,7 @@ FILE: returnTypeMismatchOnOverride.kt
         public final val balue: R|E| = R|<local>/balue|
             public get(): R|E|
 
-        public final override fun rest(): R|E| {
+        public open override fun rest(): R|E| {
             ^rest this@R|/M|.R|/M.balue|
         }
 

compiler/fir/analysis-tests/testData/resolve/diagnostics/superCallWithDelegation.fir.txt

@@ -19,7 +19,7 @@ FILE: superCallWithDelegation.kt
             super<R|B|>(R|<local>/a|)
         }
 
-        public final override fun foo(): R|kotlin/Unit| {
+        public open override fun foo(): R|kotlin/Unit| {
             this@R|/C|.super<R|B|>.R|/A.foo|()
         }