* fix(ci): pin htmx.org back to 2.0.10 to match vendored asset and SRI
The npm group bump #8085 raised htmx.org to 4.0.0, but the vendored
include/js/htmx.js, the HTMX_2_0_10_SRI integrity constant, and the
htmx.js.version file were not regenerated. CI's 'Build managed JavaScript'
step (build/sync-js.mjs) copies node_modules/htmx.org/dist/htmx.js, so it
shipped 4.0.0 while htmx_script_tag() still emitted the 2.0.10 SRI, failing
tests/Unit/Ui/Html/HtmxTest. Revert htmx.org to the vendored/pinned 2.0.10;
a real htmx 4.x upgrade should be a separate, tested PR.
* fix(htmx): sync version file, tests and docs to vendored 2.0.10
TheWitness
46908e350b