Fix: Add missing filter rule types to SavedViewFilterRule model & fix migrations

[shamoon]

Proposed change

This small PR addresses an issue where certain filter rules cause a view to be unable to be saved. This bug is actually present for a couple other filter rule types (ASN > and ASN <) so I added those too.

Edit: this PR now also includes a fix to the 'comments' and 'original filename' database migrations (ok to fix because they haven't been released yet) and a migration for this fix.

Fixes #1462

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (please explain)

Checklist:

• I have read & agree with the contributing guidelines.
• If applicable, I have tested my code for new features & regressions on both mobile & desktop devices, using the latest version of major browsers.
• If applicable, I have checked that all tests pass, see documentation.
• I have run all pre-commit hooks, see documentation.
• I have made corresponding changes to the documentation as needed.
• I have checked my modifications for any breaking changes.

[coveralls]

Pull Request Test Coverage Report for Build 2935333811

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.003%) to 92.502%

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Files with Coverage Reduction	New Missed Lines	%
documents/models.py	2	98.22%

Totals
Change from base Build 2930411616:	0.003%
Covered Lines:	4898
Relevant Lines:	5295

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💛 - Coveralls

[github-actions]

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