fix(protogen): trim space for union field type name and enum value name

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 64.20%. Comparing base (6291189) to head (372a78f). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #138 +/- ## ======================================= Coverage 64.20% 64.20% ======================================= Files 69 69 Lines 7450 7450 ======================================= Hits 4783 4783 Misses 2105 2105 Partials 562 562 ```

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