fix(ui): fix reset-all-defaults and slider rounding for performance filters

[manaswinidas]

Description

• Add missing COLD_START_LOAD_TIME and MAX_RPS to resetPerformanceFiltersToDefaults
• Handle all number filter keys in getDefaultFiltersFromNamedQuery
• Round slider range bounds and values to integers for GB-based filters
• Update Cypress reset test to cover cold start filter

Screen.Recording.2026-06-12.at.8.52.45.PM.mov

All applied and tested midstream

How Has This Been Tested?

1. Test whether cold-start load time filters disappear on "Reset all defaults"
2. Divider between the two filters on the sidebar
3. Container size slider min and max values are rounded

Merge criteria:

• All the commits have been signed-off (To pass the DCO check)

• The commits have meaningful messages
• Automated tests are provided as part of the PR for major new functionalities; testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
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• For first time contributors: Please reach out to the Reviewers to ensure all tests are being run, ensuring the label ok-to-test has been added to the PR.

If you have UI changes

• The developer has added tests or explained why testing cannot be added.
• Included any necessary screenshots or gifs if it was a UI change.
• Verify that UI/UX changes conform the UX guidelines for Kubeflow.

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