fix(popover): correct positioning and sizing when html zoom is applied

[KanhaiyaPandey]

🐛 Issue #30919

When CSS zoom is applied on the html element (e.g. zoom: 1.5), the popover is rendered in an incorrect position.
Additionally, size="cover" results in incorrect sizing.

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✅ Expected Behavior

Popover should be correctly positioned and sized regardless of the document zoom level.

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🔧 Fix

• Normalized DOMRect values and pointer coordinates based on the document zoom factor.
• Ensures consistent calculations for positioning and sizing across zoom levels.

Files updated

• core/src/components/popover/utils.ts
• md.enter.ts
• ios.enter.ts

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🧪 Tests

• Added E2E regression test for:
  • Popover positioning
  • size="cover" behavior under html { zoom: 1.5 }
• Test file:
  • core/src/components/popover/test/zoom/popover.e2e.ts
• Firefox is skipped since CSS zoom is not supported there.

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▶️ How to verify

cd core
PLAYWRIGHT_TEST_BASE_URL=http://localhost:3333 \
npx playwright test src/components/popover/test/zoom/popover.e2e.ts --project="Mobile Chrome"

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