fix(ui): remove duplicate disabled badge and tag/hook truncation on plugin cards

[shoummu1]

Bug-fix PR

📌 Summary

Plugin cards on the Plugins page showed the word "Disabled" twice for disabled plugins, and truncated tag and hook lists to arbitrary limits (3 tags, 2 hooks) even when space was available to render them in full.

🔗 Related Issue

Closes: #3842

🔁 Reproduction Steps

Duplicate "Disabled":

1. Navigate to Admin UI → Plugins page
2. Observe any plugin card with status=disabled and mode=disabled
3. Both the status dot and the mode badge rendered "Disabled"

Tag/hook truncation:

1. Navigate to Admin UI → Plugins page
2. Observe any plugin card with more than 3 tags or more than 2 hooks
3. Tags beyond 3 showed +N more; hooks beyond 2 showed ...(N total)

🐞 Root Cause

In mcpgateway/templates/plugins_partial.html:

1. The mode badge block used an {% else %} catch-all that rendered a "Disabled" badge for any mode that wasn't enforce, enforce_ignore_error, or permissive — including mode=disabled. This duplicated the status dot's "Disabled" text.
2. Tags were iterated as plugin.tags[:3] with an overflow +{{ plugin.tags|length - 3 }} more span — a hardcoded limit with no relation to available card space.
3. Hooks were similarly iterated as plugin.hooks[:2] with a ...(N total) overflow span.

💡 Fix Description

All changes are confined to mcpgateway/templates/plugins_partial.html:

• Mode badge: removed the {% else %} catch-all; the mode block now only renders a badge for the three active modes (enforce, enforce_ignore_error, permissive). mode=disabled produces no badge — the status dot already conveys the disabled state.
• Tags: removed [:3] slice and the +N more overflow span; all tags render in the existing flex-wrap container.
• Hooks: removed [:2] slice and the ...(N total) overflow span; all hooks render inline.

🧪 Verification

Check	Command	Status
Lint suite	make lint	Pass
Unit tests	make test	Pass
Coverage ≥ 90 %	make coverage	Pass
Manual regression no longer fails	Disabled plugins show single "Disabled" label; all tags and hooks visible on cards

📐 MCP Compliance (if relevant)

• Matches current MCP spec
• No breaking change to MCP clients

✅ Checklist

• Code formatted (make black isort pre-commit)
• No secrets/credentials committed

[shoummu1]

Hi @a-effort, can you please help me review this PR? It includes changes for #3842

[crivetimihai]

Thanks @shoummu1. Clean fix — removes the duplicate badge and correctly uses the config-driven session timeout. Please add the DCO Signed-off-by line to your commit.