[Feature]: Extend peek overlay to include nested properties + perf improvments

[eco-monk]

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Is there an existing issue for this?

• [X] I have searched the existing issues

Summary

Right now, we only support peeking global entities and their known properties (Table.data). We'd like to extend it so it supports peeking Table1.data[0].id

• [x] #21947
• [x] #22745
• [ ] #23054
• [ ] #23059
• [ ] #23057
• [ ] #23058

Why should this be worked on?

• user's can make use of the peek overlay to it's full extent, giving them a great debugging experience
• performance improvements #21467

[eco-monk]

Discussion notes:

• use AST/code mirror lexical data to identify expression
• send it to evaluation to get value (be wary of perf issues, trigger eval only when required)
• local variables/usage of local variables in expressions are still in the grey (need to figure what to do about them - explore AST to identify them to start with???)
• codemirror v6 upgrade is in the plans, consider that while exploring/working on this

cc: @hetunandu @arunvjn