Minor: add diag.txt file for label clashes diagnostic tests

compiler/testData/diagnostics/testsWithStdLib/labelClashes.diag.txt

@@ -0,0 +1,24 @@
+/labelClashes.kt:5:13: warning: this label is now resolved to 'function with' but soon it will be resolved to the closest 'anonymous function'. Please consider introducing or changing explicit label name
+        this@with.inc()
+            ^
+/labelClashes.kt:11:13: warning: this label is now resolved to 'function bar' but soon it will be resolved to the closest 'anonymous function'. Please consider introducing or changing explicit label name
+        this@bar.inc()
+            ^
+/labelClashes.kt:15:9: warning: parameter 'f' is never used
+fun foo(f: with.() -> Unit) {}
+        ^
+/labelClashes.kt:20:17: warning: this label is now resolved to 'class with' but soon it will be resolved to the closest 'anonymous function'. Please consider introducing or changing explicit label name
+            this@with.foo()
+                ^
+/labelClashes.kt:24:17: warning: this label is now resolved to 'class with' but soon it will be resolved to the closest 'anonymous function'. Please consider introducing or changing explicit label name
+            this@with.foo()
+                ^
+/labelClashes.kt:37:9: warning: the expression is unused
+        this@TypedThis
+        ^
+/labelClashes.kt:37:13: warning: this label is now resolved to 'class TypedThis' but soon it will be resolved to the closest 'function baz extension receiver'. Please consider introducing or changing explicit label name
+        this@TypedThis
+            ^
+/labelClashes.kt:41:9: warning: the expression is unused
+        this@TypedThis
+        ^

compiler/testData/diagnostics/testsWithStdLib/labelClashes.fir.kt

@@ -1,3 +1,5 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+
 fun Int.with() {
     with("") {
         <!ARGUMENT_TYPE_MISMATCH!>this@with.<!UNRESOLVED_REFERENCE!>inc<!>()<!>

compiler/testData/diagnostics/testsWithStdLib/labelClashes.kt

@@ -1,3 +1,5 @@
+// !RENDER_DIAGNOSTICS_FULL_TEXT
+
 fun Int.with() {
     with("") {
         this<!LABEL_RESOLVE_WILL_CHANGE("function with; anonymous function")!>@with<!>.inc()

compiler/testData/diagnostics/testsWithStdLib/labelClashesWithContextReceivers.diag.txt

@@ -0,0 +1,13 @@
+/labelClashesWithContextReceivers.kt:8:9: warning: the expression is unused
+        this@Some
+        ^
+/labelClashesWithContextReceivers.kt:8:13: warning: this label is now resolved to 'class Some' but soon it will be resolved to the closest 'function foo context receiver'. Please consider introducing or changing explicit label name
+        this@Some
+            ^
+/labelClashesWithContextReceivers.kt:9:9: warning: the expression is unused
+        this@String
+        ^
+/labelClashesWithContextReceivers.kt:14:21: warning: this label is now resolved to 'class Some' but soon it will be resolved to the closest 'property self context receiver'. Please consider introducing or changing explicit label name
+        get() = this@Some
+                    ^
+

compiler/testData/diagnostics/testsWithStdLib/labelClashesWithContextReceivers.fir.kt

@@ -1,9 +1,10 @@
 // !LANGUAGE: +ContextReceivers
+// !RENDER_DIAGNOSTICS_FULL_TEXT
 
 class Some {
     context(Some, String)
     fun foo() {
-        this<!UNRESOLVED_LABEL!>@foo<!>
+        //this@foo
         this@Some
         this<!UNRESOLVED_LABEL!>@String<!>
     }

compiler/testData/diagnostics/testsWithStdLib/labelClashesWithContextReceivers.kt

@@ -1,9 +1,10 @@
 // !LANGUAGE: +ContextReceivers
+// !RENDER_DIAGNOSTICS_FULL_TEXT
 
 class Some {
     context(Some, String)
     fun foo() {
-        <!NO_THIS!>this@foo<!>
+        //this@foo
         this<!LABEL_RESOLVE_WILL_CHANGE("class Some; function foo context receiver")!>@Some<!>
         this@String
     }