Fix FirAnnotationArgumentChecker (String + ... case) #KT-44995 Fixed

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

@@ -17,3 +17,18 @@ FILE: nonConstValInAnnotationArgument.kt
         public get(): R|kotlin/Int|
     @R|Ann|(<implicitArrayOf>(R|/foo|, R|/foo|.R|kotlin/String.plus|(R|/cnst|.R|kotlin/Any.toString|()))) public final fun test(): R|kotlin/Unit| {
     }
+    public final const val A: R|kotlin/String| = String(foo)
+        public get(): R|kotlin/String|
+    public final const val B: R|kotlin/Int| = Int(100)
+        public get(): R|kotlin/Int|
+    public final annotation class S : R|kotlin/Annotation| {
+        public constructor(s: R|kotlin/String|): R|S| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final val s: R|kotlin/String| = R|<local>/s|
+            public get(): R|kotlin/String|
+
+    }
+    @R|S|(R|/A|.R|kotlin/String.plus|(R|/B|)) public final fun foo(): R|kotlin/Unit| {
+    }

compiler/fir/analysis-tests/testData/resolve/diagnostics/nonConstValInAnnotationArgument.kt

@@ -11,3 +11,11 @@ const val cnst = 2
     )<!>
 )
 fun test() {}
+
+const val A = "foo"
+const val B = 100
+
+annotation class S(val s: String)
+
+@S(A + B)
+fun foo() {}