other: merge 3.0

* docs: add r language to connector

* docs: add r lang english version in connector

* docs: fix include path and note format

* Update 60-r-lang.mdx

minor changes

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Co-authored-by: Ndanielclow <106956386+danielclow@users.noreply.github.com>

test: add test case for r

add keep alive parameter

fix: null pointer check for mutex on windows

fix: retention file corruption

other: merge 3.0

reload state window state

docs:add doc for schemaless

Fix: TD-25408

fix(stream): dump results to sink node before paused.

fix(stream): dump results to sink node before paused.

Fix/td 25466

* docs: add qstudio in 3rd parties list

* docs: fix qstudio link

fix: restore user privilege processing if the rows generated by the u…

fix:add committed & seek process logic

fix:add committed & seek process logic