fix: quadrant chart supports unicode characters

[liyifa-efan]

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@@            Coverage Diff             @@
##           develop   #5943      +/-   ##
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- Coverage     4.67%   4.67%   -0.01%     
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  Files          372     373       +1     
  Lines        51669   51680      +11     
  Branches       611     586      -25     
==========================================
  Hits          2414    2414              
- Misses       49255   49266      +11     

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ Auto-approved build	-	Oct 8, 2024, 9:21 AM

[sidharthv96]

We have a standardised method of handling unicode, without adding character sets to jison, by wrapping the text in "". We should follow the same here.

[liyifa-efan]

We have a standardised method of handling unicode, without adding character sets to jison, by wrapping the text in "". We should follow the same here.

Thank you for your response. I am trying to resolve the issue with "AI-generated mermaid diagrams," where the AI consistently fails to follow instructions to place Chinese characters or special characters within double quotes. So, I am attempting to address this within the mermaid code itself. However, if you believe it is unnecessary to merge, I respect your decision.