Fix v4.2.0 pytest expectations for string-normalized Result data

[monrog2]

Problem

The Pytest workflow for PR #431 fails in Python 2.7 and Python 3.8 after master was merged into v4.2.0-dev. Three assertions expect native numeric values, but Result._stringify_table_rows() intentionally normalizes every table cell to a string (introduced by #392 to keep result sorting and printing stable).

Observed mismatches:

• Equipment disk usage: 98, 81, and 100 expected; "98", "81", and "100" returned.
• FX3 switch memory: 16.0 expected; "16.0" returned.

Local reproduction at 58447b4 with Python 3.8.20: 3 failed, 7 passed across the two affected test files.

Expected fix

• Update affected expectations to strings.
• Replace the stale integer type assertion with a string assertion.
• Preserve the existing Result normalization behavior.
• Verify the focused tests and full pytest suite.