[test] Unify error messages in gc and exception tests

[q82419]

1. As PR [test] Unify the trap message in gc/type-subtyping #2019 , unify the "incompatible import" as "incompatible import type".
2. According to the changes of commit e1fa752 , which changes the message "global is immutable" to "immutable global", modify the messages:
   • "array is immutable" -> "immutable array"
   • "field is immutable" -> "immutable field"