MWPW-159299 Add chart role and dynamic aria labels

[Brandon32]

• Add 'img' role to charts required for aria label
• Update echarts library and enable dynamic aria labels

Testing note: Extra data is included in the label, once the echarts feature excludeDimensionId is released we can filter it out. Currently, each series data contains the index numbers alongside all dimensions, so it is limited to one series with a custom template to avoid redundancy.

Resolves: MWPW-159299

Test URLs:

• Before: https://main--milo--adobecom.aem.live/drafts/bmarshal/chart?martech=off
• After: https://bmarshal-chart-role--milo--adobecom.aem.live/drafts/bmarshal/chart?martech=off

BACOM URLs:

• Before: https://main--bacom--adobecom.hlx.live/resources/holiday-shopping-report?martech=off
• After: https://main--bacom--adobecom.hlx.live/resources/holiday-shopping-report?martech=off&milolibs=bmarshal-chart-role

[aem-code-sync]

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Commits

• 2346b6e ✅ (latest)
• 7c522a5 ✅
• 29d2f87 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/drafts/bmarshal/chart?martech=off
🖥️	/drafts/bmarshal/chart?martech=off

[github-actions]

⚠️ [eslint] _{reported by reviewdog 🐶}
File ignored because of a matching ignore pattern. Use "--no-ignore" to override.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.47%. Comparing base (d543279) to head (2346b6e).

Additional details and impacted files

@@            Coverage Diff             @@
##            stage    #3404      +/-   ##
==========================================
- Coverage   96.48%   96.47%   -0.01%     
==========================================
  Files         254      254              
  Lines       59031    59049      +18     
==========================================
+ Hits        56954    56970      +16     
- Misses       2077     2079       +2     

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[github-actions]

Reminder to set the Ready for Stage label - to queue this to get merged to stage & production.