Fix incorrect caret position in iOS

[YaoKaiLun]

Description

When focus at the start of a middle line in a paragraph, getBoundingClientRect wil get an incorrect height and using getClientRects can get the correct height

After fixing：

Issue

Fixes: #81

Checks

• [x] The new code matches the existing patterns and styles.
• [x] The tests pass with pnpm test.
• [x] The linter passes with pnpm lint. (Fix errors with pnpm fix.)
• [x] The relevant examples still work. (Run examples with pnpm start.)
• [x] You've added a changeset if changing functionality. (Add one with pnpm changeset.)

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: c912782e91124f5e07af6e4ed152a240645fe3c6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 23 packages

| Name | Type | | ----------------------------------- | ----- | | @editablejs/editor | Patch | | @editablejs/docs | Patch | | @editablejs/plugin-align | Patch | | @editablejs/plugin-background-color | Patch | | @editablejs/plugin-blockquote | Patch | | @editablejs/plugin-codeblock | Patch | | @editablejs/plugin-context-menu | Patch | | @editablejs/plugin-font-color | Patch | | @editablejs/plugin-font-size | Patch | | @editablejs/plugin-heading | Patch | | @editablejs/plugin-history | Patch | | @editablejs/plugin-hr | Patch | | @editablejs/plugin-image | Patch | | @editablejs/plugin-indent | Patch | | @editablejs/plugin-leading | Patch | | @editablejs/plugin-link | Patch | | @editablejs/plugin-list | Patch | | @editablejs/plugin-mark | Patch | | @editablejs/plugin-mention | Patch | | @editablejs/plugins | Patch | | @editablejs/plugin-table | Patch | | @editablejs/plugin-toolbar | Patch | | @editablejs/plugin-yjs | Patch |

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[YaoKaiLun]

In some situations, clientRects will be empty, like inserting an image.