Switch kotlin version to 1.7

* Change 1.6 to 1.7 constants
* Fix SAFE_CALL_WILL_CHANGE_NULLABILITY for testData
* Change EXPOSED_PROPERTY_TYPE_IN_CONSTRUCTOR_WARNING to EXPOSED_PROPERTY_TYPE_IN_CONSTRUCTOR_ERROR
* Change NON_EXHAUSTIVE_WHEN_STATEMENT to NO_ELSE_IN_WHEN
* Fix testData for SafeCallsAreAlwaysNullable
* Change T -> T & Any in test dumps
* Change INVALID_CHARACTERS_NATIVE_WARNING -> INVALID_CHARACTERS_NATIVE_ERROR
* TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM_WARNING -> TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM_ERROR

libraries/stdlib/src/kotlin/util/KotlinVersion.kt

@@ -79,5 +79,5 @@ public class KotlinVersion(val major: Int, val minor: Int, val patch: Int) : Com
 // this class is ignored during classpath normalization when considering whether to recompile dependencies in Kotlin build
 private object KotlinVersionCurrentValue {
     @kotlin.jvm.JvmStatic
-    fun get(): KotlinVersion = KotlinVersion(1, 6, 255) // value is written here automatically during build
+    fun get(): KotlinVersion = KotlinVersion(1, 7, 255) // value is written here automatically during build
 }