2266 ns form meta

[PEZ]

What has changed?

We used to bail out if the form in front of ns or in-ns was not of type id, making us return null if the namespace symbol had metadata. Now we examine all sexps in ns and in-ns forms to try find the namespace symbol.

• Fixes Calva can't seem to parse a ns form with metadata after 2.0.376 #2266

My Calva PR Checklist

I have:

• Read How to Contribute.
• Directed this pull request at the dev branch. (Or have specific reasons to target some other branch.)
• Made sure I have changed the PR base branch, so that it is not published. (Sorry for the nagging.)
• Made sure there is an issue registered with a clear problem statement that this PR addresses, (created the issue if it was not present).
  • Updated the [Unreleased] entry in CHANGELOG.md, linking the issue(s) that the PR is addressing.
  • Referenced the issue I am fixing/addressing in a commit message for the pull request.
    • If I am fixing the issue, I have used GitHub's fixes/closes syntax
• Figured if anything about the fix warrants tests on Mac/Linux/Windows/Remote/Whatever, and either tested it there if so, or mentioned it in the PR.
• [ ] Added to or updated docs in this branch, if appropriate
• Tests
  • Tested the particular change
  • Figured if the change might have some side effects and tested those as well.
• Formatted all JavaScript and TypeScript code that was changed. (use the prettier extension or run npm run prettier-format)
• Confirmed that there are no linter warnings or errors (use the eslint extension, run npm run eslint before creating your PR, or run npm run eslint-watch to eslint as you go).

Ping @PEZ, @bpringe, @corasaurus-hex, @Cyrik

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