Update icon and tooltip for reload.

[polina-c]

Make it more similar to what is in VSCode:

Before change:

After change:

[github-actions]

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[devoncarew]

I think we can be pretty terse here - users will generally be familiar with hot reload. The tooltip can help them identify that that's what this button does.

Perhaps 'Apply changes and hot reload.'?

[devoncarew]

Did you intend to update the tooltip text?

[polina-c]

There is another thread about tooltip text: #3237 (comment)

I do not have strong opinion here.

So, maybe you and Ryan chat directly with each other and I will take what you agreed on?

[devoncarew]

Ryan's (likely) unavailable at Cloud Next; I prefer short, clear tooltips. I think you can land your preference however - this is easy to come along later w/ a follow-up PR if we do decide we want different verbiage.

[polina-c]

I prefer longer version, because DartPad is a place where many people start learning Flutter. So, I would not assume they know what is hot reload, and, if they do not, it is a great chance to educate them.

I need lgtm to land. :)

[johnpryan]

nit: I would change the tooltip to "Apply changes with Hot Reload, which updates widgets without losing the state of the app."

[polina-c]

applied

Added 'when possible' :)

[polina-c]

And replaced 'updates' with 're-renders the modified'