Make services table height responsive

[Jxl-s]

Closes #97

Overview

The services table previously used min-h-screen, causing the page to
scroll rather than the table paginating within the viewport. This PR
mirrors the pattern already used by the users and forms pages: a bounded
layout.tsx establishes the height context, the page and ServicesTable
propagate a flex/overflow chain, and UsersDataTable (which uses a
ResizeObserver to compute page size from available height) replaces the
static DataTable.

Testing

Manually resized the browser window vertically on /services and
confirmed the table shows fewer rows as the viewport shrinks, with
pagination updating accordingly. Verified the behaviour matches /users.

Screenshots / Screencasts

Screen.Recording.2026-06-26.at.11.39.49.PM.mov

Checklist

• Code is neat, readable, and works
• Code is commented where appropriate and well-documented
• Commit messages follow our guidelines
• Issue number is linked
• Branch is linked
• Reviewers are assigned (one of your tech leads)

Notes

N/A

[RenaudBernier]

Good work Jia.
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