Fix grouped/addons size with inside labels

[service-paradis]

Adapt grouped or addons elements height if we use label-position="inside"

Proposed Changes

• Keep every grouped elements the same height

Results

[codecov]

Codecov Report

Merging #1761 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #1761   +/-   ##
=======================================
  Coverage   59.45%   59.45%           
=======================================
  Files          61       61           
  Lines        2200     2200           
  Branches      696      696           
=======================================
  Hits         1308     1308           
  Misses        820      820           
  Partials       72       72

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[service-paradis]

The #1758 case is not resolved using this PR since there is a b-field inside another b-field without any .control. This would need another fix.

ex:

<b-field grouped>
    <b-field label="Search" label-position="inside">
            <b-input />
    </b-field>
    <b-button>Submit</b-button>
</b-field>

This fix will work if used like this:

<b-field label="Search..." label-position="inside" grouped>
    <b-input placeholder="Search..." type="search"></b-input>
    <p class="control">
        <b-button class="button is-primary">Search</b-button>
    </p>
</b-field>