Patch for the type name issue in change method parameter refactoring code action.

[shivam71]

• ChangeMethodParametersRefactoring code action is used for changing the method signature .
• This patch fixes the issue of using fully qualified names for the parameter types irrespective of what the user has written in the code .
• The issue lead to annoying change of all the type names to fully qualified names whenever the ChangeMethodParametersRefactoring code action was triggered . Like String was converted to java.lang.String.
• With this patch being applied the type name would be taken from the user code as is (verbatim) . So if the user has used simple type names they would be preserved .
• Thanks to @lahodaj for providing this patch.

[sid-srini]

Thanks @shivam71 and @lahodaj. LGTM 👍

[Achal1607]

LGTM. Thanks