fix: show copy button confirmation on click only

[marekdano]

Closes #72

Summary

Builds on #61 (which consolidated 17 copy buttons onto a shared CopyButton). This closes #72 by reserving the tooltip for the copy confirmation instead of double-duty as a hover hint, fixing an accessibility/interaction bug along the way: a hover-opened Radix tooltip inside ToolSchemaDialog/TokenCreatedDialog was swallowing the first Escape press meant for the dialog, since only the topmost DismissableLayer responds to Escape.

Interaction

• CopyButton now shows its confirmation bubble on click only — hover and focus produce nothing.
• Replaced Radix Tooltip with @floating-ui/react-dom + createPortal, sidestepping the Escape-layering bug and clipping against table/dialog/TestConnectionPanel containers.
• aria-label stays fixed at all times; a single always-mounted role="status" region is now the sole non-visual announcement channel for the copied/failed state.
• Added @floating-ui/react-dom as a direct dependency (was already present transitively via Radix).

Accessible labels

• Standardized copy-button labels on "field + row name" (e.g. Copy tool ID for {name}) across the tools/resources/servers tables and the MCP server / virtual server detail panels.
• Fixed two spots that were reading a raw URI or identifier aloud instead of naming the field.
• i18n'd remaining hardcoded English strings (UUID, URL, Input, Output, server ID) and CodeBlock's default "Copy code" label, adding matching es-ES/pt-BR translations.

Focus placement

• Reverted TokenCreatedDialog's auto-focus redirect — it existed only to dodge the hover-tooltip issue, which no longer applies.
• Kept ToolSchemaDialog's redirect (Close is still the more useful landing spot in a mostly read-only dialog) with an updated comment.

Tests

• Rewrote CopyButton tests for the click-only behavior and the always-mounted status region.
• Updated cascading fixtures across tables/detail panels for the new label text.
• Fixed a vi.useFakeTimers() leak in ServersTable.test.tsx that was silently hanging unrelated tests after an assertion failure.

Test plan

• npx vitest run — 183 test files, 3090 tests passing
• npx tsc -b — clean
• npx eslint src server e2e — clean
• npx prettier --check — clean
• npm run build — succeeds
• Manual verification in headless Chromium: hover/focus show no bubble; click shows "Copied!" bubble with Check icon swap, positioned above the button; bubble clears after 1.5s; clipboard write confirmed

[vishu-bh]

Changes are clean just some accessibility/i18n gaps needs closing.

[vishu-bh]

This button copies component identifier, but accessible label says only Copy {title} (for example, “Copy Tool One”). Use field + row naming, such as “Copy tool ID for Tool One”. Same issue exists in VirtualServerDetailsPanel.tsx:590-593

[vishu-bh]

component.type.slice(0, -1) produces English labels like tool and resource. In Spanish/Portuguese, screen readers announce “Copiar tool/resource”. Add localized singular component labels and use them here.