[WEB-5863] fix: estimate point input validation

[anmolsinghbhatia]

Description

This PR fixes estimate point input validation.

Type of Change

• [x] Bug fix

Summary by CodeRabbit

• New Features

  • Added support for decimal and floating-point values in estimate inputs, enabling more precise and granular numerical estimates without strict integer constraints.

• Bug Fixes

  • Updated input validation and parsing logic to better handle flexible numeric input, removing strict validation requirements while maintaining step increments for improved estimate precision.

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