fix(core) Allow text style to be clearable on new lines

[C-Hess]

Please describe your changes

When you have your cursor on a new line and some text style is applied (either from the Font Family or Color extensions), you cannot clear out the text styles when the cursor is on a new line.

It turns out there are two main factors that cause this behavior

Factor 1

We begin with the unset command of an extension that extends text-style. For example: font-family

https://github.com/ueberdosis/tiptap/blob/ccf05b04e3a2e2ee36c5bdac4d3b1a88bfe7a71d/packages/extension-font-family/src/font-family.ts#LL64C1-L67C17

Note that it first calls setMark then calls removeEmptyTextStyle. It doesn't matter what the two commands do. Really all that is causing this issue is the fact that we are calling another command after setMark within a chain()

Factor 2

Chained commands fail to persist stored marks. Look at this code snippet; it looks like in between chained commands, we are resetting the transaction's stored marks based on what is in state:

https://github.com/ueberdosis/tiptap/blob/ccf05b04e3a2e2ee36c5bdac4d3b1a88bfe7a71d/packages/core/src/CommandManager.ts#LL123C1-L125C6

As a result, the storedMarks fields cannot be updated if you run more than one chained command.

How did you accomplish your changes

Removing the logic that resets the transaction stored marks for chained commands resolves the issue. I really would need to know what prompted the change to begin with. All I have to go off of is this commit that I'm struggling to find an associated PR/issue for:
532eaa4

How have you tested your changes

Added automated tests around this behavior.

How can we verify your changes

Follow issue reproduction's steps in the color demo

Checklist

• The changes are not breaking the editor
• Added tests where possible
• Followed the guidelines
• Fixed linting issues

Related issues

fixes #3702

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[C-Hess]

Hold: looks like I just figured out what that line does. Looks like without it, stored marks are lost when creating a list...

Looking at writing a test for that and trying to find a solution

[C-Hess]

Closing for now. Will need to think of a different approach

[C-Hess]

Okay false alarm, sorry for the mess here :)

Hold: looks like I just figured out what that line does. Looks like without it, stored marks are lost when creating a list...
Looking at writing a test for that and trying to find a solution

I was wrong about this, this behavior never existed. I can't find anything different before and after my changes

[bdbch]

I'm not sure if I can approve this. @svenadlung you want to take a look too? I could imagine this being at least a breaking change for some users who do work with styles being kept on new lines