MultiSelect: Filter text selection

Describe the bug

When using MultiSelect with filtering enabled, if I type in the filter input, select the typed text with the mouse, drag outside the panel, and release, the overlay closes.

This makes normal text-selection behavior in the filter input feel broken, because the panel is dismissed even though the interaction started inside the filter field.

Reproducer

I can reproduce this consistently with a standard MultiSelect filter input.

System Information

System:
    OS: macOS 26.3.1
    CPU: (8) arm64 Apple M1 Pro
    Memory: 76.47 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.14.0 - /Users/lennert.van-sever/.nvm/versions/node/v24.14.0/bin/node
    Yarn: 1.22.22 - /usr/local/bin/yarn
    npm: 11.9.0 - /Users/lennert.van-sever/.nvm/versions/node/v24.14.0/bin/npm
    pnpm: 10.2.0 - /usr/local/bin/pnpm
  Browsers:
    Chrome: 146.0.7680.164
    Edge: 146.0.3856.72
    Firefox: 148.0.2
    Safari: 26.3.1

Steps to reproduce the behavior

1. Open a MultiSelect panel with filter enabled.
2. Type some text into the filter input.
3. Select the typed text with the mouse.
4. Keep holding the mouse button, move the cursor outside the overlay/panel.
5. Release the mouse button outside.

Expected behavior

The overlay should remain open.

Releasing the mouse outside after starting a text-selection interaction inside the filter input should not be treated as an outside dismiss.

Start by reproducing the behavior in the MultiSelect component with filtering enabled, then trace how the filter input and overlay handle mouse selection and outside dismissal. Done means selecting text in the filter input and releasing outside leaves the overlay open; verify the reported reproduction steps after the change.