WEB-339 replace custom api of share.service.ts

[JaySoni1]

Replaced custom methods in *.ts files that were previously using ShareService with their corresponding auto-generated methods from the OpenAPI-based @fineract/client package.

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[JaySoni1]

@gkbishnoi07 Please Review .

[gkbishnoi07]

@gkbishnoi07 Please Review .

on it!