Adjust offset for some layouts

[fauxpark]

Description

Fixing layouts flagged by #20070, except for these three:

⚠ botanicalkeyboards/fm2u: Layout "LAYOUT_isoenter" is offset on X axis by 0.25
⚠ illuminati/is0: Layout "LAYOUT" is offset on X axis by 0.25
⚠ kb_elmo/isolation: Layout "LAYOUT" is offset on X axis by 0.25

as they are all just a single ISO enter. Might need special handling?

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).