chore: Update changelog 2.12.0 (#23007)

chore: update changelog 2.12.0

CHANGELOG.en-US.md

@@ -1,6 +1,39 @@
 ## Changelog
 
 
+### 2.12.0
+
+_2025-12-05_
+
+#### Features
+
+- Components [menu] apply popper-class and popper-style to the tooltip of the title (#22908 by @keeplearning66)
+- Components [table] accessibility enhancement (#22432 by @tolking)
+- Components [tag] a11y (#22530 by @Dsaquel)
+
+#### Bug fixes
+
+- Components [splitter] runtime validation failed for update:size (#22957 by @rzzf)
+- Components [splitter] display the mask after panel update (#22954 by @rzzf)
+- Components [table-column] reactively update filterable state (#22879 by @tuzixiangs)
+- Components [anchor] prevent scroll stutter on rapid clicks (#22964 by @tuzixiangs)
+- Components [select] ensure dropdown remains open when filterable (#22975 by @tolking)
+- Theme-chalk [upload]: incorrect padding value for el-upload-dragger (#14903 by @qdechochen)
+- Components [radio & checkbox] fix button wrap style (#22073 by @SpanManX)
+- Components [message-box] disable page scroll when dialog open (#22981 by @rzzf)
+- Components [tab] fix style when tab position is bottom (#18425 by @btea)
+- Components [focus-trap, popper, tooltip] memory leak (#20147 by @gjfei)
+- Components [table] try load data only when expanding row (#21678 by @KeroZhai)
+- Style(theme-chalk): [form-item] reset top position label padding-right (#22965 by @duyidao)
+- Improvement(components): [table] keep cursor style during drag (#22915 by @rzzf)
+- Style(theme-chalk): dark mode component bg-color transparent on overlay (#10890 by @loosheng)
+- Style(components): [cascader] cascader-panel fit width (#21497 by @zhixiaotong)
+- Style(theme-chalk): [card]: grow body height (#22829 by @Dsaquel)
+
+#### Refactors
+
+- !: the disabled value of component has the highest priority (#18739 by @btea)
+
 ### 2.11.9
 
 _2025-11-28_