Add speller suggestions for UFCS and pointer fields

[ntrel]

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[dlang-bot]

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Bugzilla references

Auto-close	Bugzilla	Severity	Description
✓	9997	enhancement	Missed misspell suggestions for UFCS
✓	23449	enhancement	spellchecker should suggest corrections for pointer members

Testing this PR locally

If you don't have a local development environment setup, you can use Digger to test this PR:

dub run digger -- build "master + dmd#16673"