Inline-Blocks are not inline when added through the "+" button

[ChannKan]

Describe the Bug

When adding a inline-block through the side "+" button in a rich-text field it is added as a block under the current line and not inline.
Because this is the general behavior of the "+" button inline-blocks should not be enabled.

Link to the code that reproduces this issue

https://github.com/shefing/payload_Inline_block_with_relationship/tree/Inline_block_with_relationship

Reproduction Steps

Steps to reproduce:

1. Clone the link to reproduction ripo and launch Payload
2. Create a new Post instance
3. Type text into the rich-text field
4. Add a inline-block in the same line as the text with the "+" button

Expected:
Inline-block is added after the text in the same line

Actual:
Inline-block is added under the text in the next line (Attached screenshot)

Which area(s) are affected? (Select all that apply)

plugin: richtext-lexical

Environment Info

Output from 'pnpm payload info':
Binaries:
Node: 20.9.0
npm: 10.2.5
Yarn: 1.22.21
pnpm: 9.10.0
Relevant Packages:
payload: 3.0.0-beta.104
next: 15.0.0-canary.104
@payloadcms/db-mongodb: 3.0.0-beta.104
@payloadcms/graphql: 3.0.0-beta.104
@payloadcms/live-preview: 3.0.0-beta.104
@payloadcms/next/utilities: 3.0.0-beta.104
@payloadcms/plugin-cloud-storage: 3.0.0-beta.104
@payloadcms/plugin-redirects: 3.0.0-beta.104
@payloadcms/plugin-seo: 3.0.0-beta.104
@payloadcms/richtext-lexical: 3.0.0-beta.104
@payloadcms/storage-s3: 3.0.0-beta.104
@payloadcms/translations: 3.0.0-beta.104
@payloadcms/ui/shared: 3.0.0-beta.104
react: 19.0.0-rc-06d0b89e-20240801
react-dom: 19.0.0-rc-06d0b89e-20240801