[feat] Change grouping section layout in figures explorer

[VkoHov]

• Move the grouping section under the query form section.
• Tune the query form section.
• Tune the grouping section
• Set the text button instead of the previous element.
• Try to mix our prev. styles to avoid inconsistency with the query form and app bar.

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[VkoHov]

Resolves #2144

[KaroMourad]

lgtm