ForbidWildcardImports misses indented import statements

[mirkoalicastro]

While testing some other spotless changes, I noticed this interesting behaviour. ForbidWildcardImports fails to flag wildcard import statements that have leading whitespace (either indentation or tab). Leading whitespace before an import is valid Java (although ugly 😅), so these lines compile but they don't get detected by the lint.

Steps to reproduce

Run the forbidWildcardImports step against:

  import java.util.*;

(2 leading spaces)

Expected

Line reported as wildcard-import lint errors.

Actual

No lint error.