fix: run fields_mismatch against static_schema data also

[de-sh]

Fixes #XXXX.

Description

Don't cast floats as int on streams with static_schema_flag set

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Testing Methodology

1. Start parseable.
2. Create new static schema stream with an int field.
3. Push data on the static schema stream with float value.

Without the fix, value is being rounded out, which is wrong as we lose data.

This PR has:

• been tested to ensure log ingestion and log query works.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added documentation for new or modified features or behaviors.

[coveralls]

Pull Request Test Coverage Report for Build 12874465279

Details

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.01%) to 12.7%

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Totals
Change from base Build 12873819985:	-0.01%
Covered Lines:	2456
Relevant Lines:	19338

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💛 - Coveralls