Enable drag annotation while changing the annotation to draggable in long click

[Chaoba]

Summary of changes

Remove the checking for isDraggable in startDragging, so that if users change the draggable to true in the long click, the dragging annotation could be dragged in the following drag events.

User impact (optional)

Pull request checklist:

• Briefly describe the changes in this PR.
• Include before/after visuals or gifs if this PR includes visual changes.
• Write tests for all new functionality. If tests were not written, please explain why.
• Optimize code for java consumption (@JvmOverloads, @file:JvmName, etc).
• Add example if relevant.
• Document any changes to public APIs.
• Apply changelog label ('breaking change', 'bug 🪲', 'build', 'docs', 'feature 🍏', 'performance ⚡', 'testing 💯') or use the label 'skip changelog'
• Add an entry inside this element for inclusion in the mapbox-maps-android changelog: <changelog>Enable drag annotation while changing the annotation to draggable in long click</changelog>.
• If this PR is a v10.[version] release branch fix / enhancement, merge it to main firstly and then port to v10.[version] release branch.

Fixes: < Link to related issues that will be fixed by this pull request, if they exist >

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