Deprecate escaped modifiers and unescaped annotations

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/enumConst.kt

@@ -1,6 +1,6 @@
 annotation class AnnE(val i: MyEnum)
 
-AnnE(<!ANNOTATION_PARAMETER_MUST_BE_ENUM_CONST!>e<!>)
+@AnnE(<!ANNOTATION_PARAMETER_MUST_BE_ENUM_CONST!>e<!>)
 class Test
 
 val e: MyEnum = MyEnum.A
@@ -9,5 +9,5 @@ enum class MyEnum {
     A
 }
 
-AnnE(<!TYPE_MISMATCH!>Test()<!>)
+@AnnE(<!TYPE_MISMATCH!>Test()<!>)
 class Test2

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/javaProperties.kt

@@ -13,7 +13,7 @@ public class Test {
 // FILE: a.kt
 annotation class Ann(vararg val i: Int)
 
-Ann(
+@Ann(
         <!ANNOTATION_PARAMETER_MUST_BE_CONST!>Test.i1<!>,
         Test.i2,
         <!ANNOTATION_PARAMETER_MUST_BE_CONST!>Test.i3<!>,

compiler/testData/diagnostics/tests/annotations/annotationParameterMustBeConstant/kotlinProperties.kt

@@ -1,6 +1,6 @@
 annotation class Ann(vararg val i: Int)
 
-Ann(
+@Ann(
         <!ANNOTATION_PARAMETER_MUST_BE_CONST!>i1<!>,
         i2,
         <!ANNOTATION_PARAMETER_MUST_BE_CONST!>i3<!>,