* chore(deps): upgrade stardoc
This uses the Bazel 7 'starlark_doc_extract' rule which our docsite expects for slurping data.
* chore: stardoc setup in WORKSPACE too
* chore: skip stardoc on bazel 6 in cases where the legacy extractor produces different docstrings
* fix: Set size to a default value as well as timeout.
Currently, we are unable to run our `write_source_files` tests in our pre-upload checks, because we have `--test_size_filter=small`, and setting `size` will attempt to set it on both the run rule and the test rule, the former being invalid.
* code review feedback
* chore: fix one more test that should use size for defaulting
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Co-authored-by: Alex Eagle <alex@aspect.dev>