Update RenameToUpperCaseCodeFixProvider to not offer a code fix if the identifier only consists of underscores#3637

sharwell merged 1 commit intoDotNetAnalyzers:masterDotNetAnalyzers/StyleCopAnalyzers:masterfrom

bjornhellander:feature/sa1300-fix-crashbjornhellander/StyleCopAnalyzers:feature/sa1300-fix-crashCopy head branch name to clipboard