[Feature Request] Allow user to type in properties not in dropdown in search bar

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**Graph Explorer Version (and Graph Database and Version used if applicable)**
All

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**Describe the solution you'd like**
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In search bar in upper middle, the drop-down of properties to search on for a specific node type is limited to the most common properties discovered during sync. This does not include all properties for that node type. Allow the user to type in the property if is it not shown and search on it.

**Additional context**
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