[BUG][Disocver] Timefield of an indexPattern would get added to selected field in the side nav when removing a column from the canvas

[MadaniKK]

Describe the bug
Everytime we remove a column from the canvas, the timefield of the indexpattern get added to the selected field in the side nav.
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Go to Discover, selected some columns
2. Click on 'remove column'
3. Look at the selected fields in left side bar
4. See the timestamp/order date column got added to the selected field
   
   
   

Expected behavior
The time field shouldn't get added to the selected field automatically.

OpenSearch Version
Please list the version of OpenSearch being used.
3.0.0

Dashboards Version
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Plugins

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Screenshots

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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Browser and version [e.g. 22]

Additional context

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[ananzh]

@MadaniKK Thanks for opening. I have assigned it to you.

[MadaniKK]

I suggest keeping the time column in the side nav bar because it exists in the legacy cover, and when the hide time column is off, we can still add the time column to the selected field and use drag-drop to arrange column order.

[ananzh]

Close it as it is resolve in #5538