Fix sizing of subtables with different column count #19540

Description:

In some reports we have tables where the subtables might have a different column count. One example is the search keyword report, if the paid search performance plugin is installed. Currently the table looks like this:

With this fix, the subtable is aligned without looking at the parent table, and thus the label column gets as much space as available and labels are not truncated

Review

• [ ] Functional review done
• [ ] Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• [ ] Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• [ ] Security review done
• [ ] Wording review done
• [ ] Code review done
• [ ] Tests were added if useful/possible
• [ ] Reviewed for breaking changes
• [ ] Developer changelog updated if needed
• [ ] Documentation added if needed
• [ ] Existing documentation updated if needed

I've added another couple of fixes. Found some more bugs in the calculation and adjusted the code so the resize of a data table is now only triggered when needed. Need to adjust some more tests before this is ready for review...