feat: Add mimir support to connect

[rossbulat]

This PR adds Mimir support to the connect functionality by integrating Mimir's iframe injection capabilities. Mimir is a multisig wallet that operates within iframes, requiring special handling for extension discovery.

• Adds Mimir extension support with iframe injection detection
• Updates extension discovery to handle Mimir-specific initialization
• Includes Mimir extension metadata and assets

[Copilot]

Reviewed Changes

Copilot reviewed 9 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
library/validator-assets/src/Stakin.tsx	Removes unused clip-rule attribute from SVG path
library/react-connect-kit/src/Extensions/Connect.tsx	Adds Mimir injection to extension discovery process
library/react-connect-kit/package.json	Updates version and observables-connect dependency
library/observables-connect/src/extensions/mimir.ts	Implements Mimir iframe detection and injection logic
library/observables-connect/src/extensions/index.ts	Exports new Mimir functionality
library/observables-connect/src/extensions/discover.ts	Removes biome-ignore comment
library/observables-connect/package.json	Updates version and adds Mimir dependency
library/extension-assets/src/Mimir/info.json	Adds Mimir extension metadata
library/extension-assets/package.json	Updates version number

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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