[Grid] Column filter for relational fields with width > 300 hides search icon

[BlackbitDevs]

Steps to reproduce:

1. Create class with many-to-one relation field Brand
   Set width of field to 500.
2. Create object of this class
3. Open grid view of /, show field Brand
4. Use column filter for Brand -> Filter by relation

As the width of the popup window is only 500px, the input field is so wide that the looking glass icon does not fit anymore:

If you set the field width to 600, the problem gets even worse: No buttons are shown at all:

This PR ignores the set width in the relation filter dialogue but uses always 300px - the same value as if no width was configured for the field, see

admin-ui-classic-bundle/public/js/pimcore/object/tags/manyToOneRelation.js

Lines 157 to 161 in f083808

	if (this.fieldConfig.width) {
	href.width = this.fieldConfig.width;
	} else {
	href.width = 300;
	}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[mcop1]

Hello @BlackbitDevs ,

thanks for the pr.
I was wondering if the method here https://github.com/pimcore/admin-ui-classic-bundle/blob/1.7/public/js/pimcore/element/helpers/gridColumnConfig.js#L452 was implemented for that reason as well. Maybe we could adapt that method for manyToOneRelation. What do you think?