bugfix/KAD-2962

[gilbert-hernandez]

🎫 #[Jira Ticket]
https://stellarwp.atlassian.net/browse/KAD-2962
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Checklist

• I have performed a self-review.
• No unrelated files are modified.
• No debugging statements exist (Ex: console.log, error_log).
• There are no warnings or notices in the wordpress error log.
• Passes all tests (linting, acceptance, & unit)

Block specific checklist (where relevant)

• Tested with an existing instance of this block .
• Tested creating a new instance of this block.
• Tested with Dynamic content & Elements.

[gilbert-hernandez]

When copy/paste styles in the widget editor, the __internalWidgetId attribute is copied. This causes a problem when the user tries to save the widgets. This fix makes sure the attribute isn't included when pasting styles.

[oakesjosh]

Discussed moving the delete widgetEditorAttributesToPaste.__internalWidgetId; into the CopyPasteAttributes component

[gilbert-hernandez]

@oakesjosh
Moved the fix to the CopyPasteAttributes component so it applies to other blocks.