fix(summary-row): don't show checkbox with summary row

[chintankavathia]

checkboxes are only mean't for rows selection and showing it on summary row make no sense.

currently when enabling selectionType with checkbox all rows along with summary row as well shows checkbox.
showing checkbox on summary row doesn't make any sense.

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior? (You can also link to an open issue here)

What is the new behavior?

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...

Other information:

[gemini-code-assist]

Code Review

This pull request modifies the DataTableSummaryRowComponent to ensure that checkboxes are disabled within the summary row by explicitly setting the checkboxable property to false for all internal columns. I have no feedback to provide.

[spike-rabbit]

@fh1ch I think the change is good, but I would consider this as breaking. Although I cannot imagine how the CB should have been used before. WDYT?

@chintankavathia Is it even possible for a consumer to get the value of that checkbox in the summary row?

[chintankavathia]

@fh1ch I think the change is good, but I would consider this as breaking. Although I cannot imagine how the CB should have been used before. WDYT?

@chintankavathia Is it even possible for a consumer to get the value of that checkbox in the summary row?

No it doesn't emit anything so its just dumb checkbox doing nothing.

[Copilot]

Pull request overview

This PR fixes an issue in the summary row rendering so that row-selection checkboxes are not shown for the summary row (where selection is not meaningful), aligning summary-row behavior with the intended purpose of checkbox selection.

Changes:

• Force summary-row internal columns to be non-checkboxable so checkbox inputs are not rendered in summary cells.

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