Modbus - Exception since 2023.5.0 - Update base_platform.py

[String-656]

Proposed change

Detect NaN and replace with None. Float 16/32/64 can return nan, 0X7FC0.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes Modbus - Exception since 2023.5.0: state class None: numeric value, however, it has the non-numeric value. home-assistant/core#93297
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
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