[BugFix] Fix Limit Param For yFinance Financials

[deeleeramone]

1. Why?:

   • Resolves [Bug] limit parameter not working #6954

2. What?:

   • Applies to balance, cash, and income.
   • Add le=5 to the yFinance model definition.
   • Filter out the response if limit < 5.

3. Impact:

   • For provider='yfinance', a validation error will raise when the limit is more than 5.

4. Testing Done:

[piiq]

Default limit - 5
Is it enough as a default one?

[deeleeramone]

Default limit - 5 Is it enough as a default one?

That's the maximum number of results returned from yFinance.