fix: adjust notification default place in rtl

[xrkffgg]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Perfermance optimization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

#24566 (comment)

📝 Changelog

Language	Changelog
🇺🇸 English	Adjust Notification default placement to topLeft in RTL.
🇨🇳 Chinese	调整 Notification RTL 模式下默认弹窗位置为左上。

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

[ant-design-bot]

[ant-design-bot]

[codecov]

Codecov Report

Merging #24632 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master   #24632   +/-   ##
=======================================
  Coverage   99.20%   99.20%           
=======================================
  Files         365      365           
  Lines        7278     7280    +2     
  Branches     2037     1987   -50     
=======================================
+ Hits         7220     7222    +2     
  Misses         58       58           

Impacted Files	Coverage Δ
components/notification/index.tsx	96.93% <100.00%> (+0.06%)	⬆️

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