[WIP] Fix bind-value-oninput issue with contenteditable divs

[Copilot]

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Original prompt

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This section details on the original issue you should resolve

<issue_title>Blazor: bind-value-oninput or bind does not work with contenteditable divs</issue_title>
<issue_description>### bind-value-oninput or bind does not work with contenteditable divs

Bug Description

In the below code, the expectation is as and when I edit the div content I need to update the model so that I can then save it back to Database.

To Reproduce

Steps to reproduce the behavior:

1. Using the latest preview version of ASP.NET Core 3
2. Run the below code
   <div contenteditable="true" bind-value-oninput="@contentEditableText">
You can Edit this Text
</div>
@contentEditableText
@functions { string contentEditableText = "You can Edit this Text"; }
3. As I Type something in the editable div, I need to see the same reflected in the body, but it does not happen that way. The OnChange event does not fire automatically.

Expected behavior

OnChange Event needs to fire and changes in editable div should be bound to the model.

Screenshots

Comments on the Issue (you are @copilot in this section)

@SteveSandersonMS We don't currently support `bind` with `contenteditable`. It might be something we add in the future, but it's not directly planned.

In the meantime, you can use contenteditable in conjunction with JS interop to receive notification when edits occur and update your .NET models.</comment_new>
<comment_new>@SteveSandersonMS
Reopening in case this is something we choose to address in the future.</comment_new>
<comment_new>@
We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.</comment_new>
<comment_new>@
Thanks for contacting us.

We're moving this issue to the .NET 8 Planning milestone for future evaluation / consideration. We would like to keep this around to collect more feedback, which can help us with prioritizing this work. We will re-evaluate this issue, during our next planning meeting(s).
If we later determine, that the issue has no community involvement, or it's very rare and low-impact issue, we will close it - so that the team can focus on more important and high impact issues.
To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.</comment_new>
<comment_new>@
We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.</comment_new>
<comment_new>@
Thanks for contacting us.

We're moving this issue to the .NET 9 Planning milestone for future evaluation / consideration. We would like to keep this around to collect more feedback, which can help us with prioritizing this work. We will re-evaluate this issue, during our next planning meeting(s).
If we later determine, that the issue has no community involvement, or it's very rare and low-impact issue, we will close it - so that the team can focus on more important and high impact issues.
To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.</comment_new>

• Fixes Blazor: bind-value-oninput or bind does not work with contenteditable divs #9974

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