feat[vortex-runend]: handle canonicalizing Ree<Dict> and Ree<Utf8>

[asubiotto]

This allows writing these kinds of types. I'm unaware of the motivation behind restricting ree values to just primitive and bool prior to this commit.

Summary

The motivation for this PR is that I want to write RunEndArrays with these value types.

Testing

Unit tests for each new canonicalization path.

[codspeed-hq]

Merging this PR will not alter performance

✅ 980 untouched benchmarks
⏩ 1466 skipped benchmarks¹

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_{Comparing asubiotto/ree (bf6eda1) with develop (c361a3a)²}

Footnotes

1. 1466 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

2. No successful run was found on develop (a332796) during the generation of this report, so c361a3a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[asubiotto]

Removed the dict arm since it was unnecessary and inverting the order of canonicalization (causing the benchmark regressions). The existing code already works for dicts