[BUGFIX] Use `form-select` for EXT:form "version2" select elements

The EXT:form "version2" is using bootstrap 5,
which requires <select> elements to use the
`form-select` class. This is now fixed for
corresponding form elements.

Resolves: #103117
Releases: main, 12.4
Change-Id: I712cecfa4c5ac8facc84bc3cf0f742867ecc9613
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83002


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Jochen Roth <rothjochen@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Jochen Roth <rothjochen@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>

typo3/sysext/form/Configuration/Yaml/FormElements/CountrySelect.yaml

@@ -124,7 +124,7 @@ prototypes:
             condition: 'getRootFormProperty("renderingOptions.templateVariant") == "version2"'
             properties:
               containerClassAttribute: 'form-element form-element-select mb-3'
-              elementClassAttribute: form-control
+              elementClassAttribute: form-select
               elementErrorClassAttribute: ~
               labelClassAttribute: form-label
     formEditor:

typo3/sysext/form/Configuration/Yaml/FormElements/MultiSelect.yaml

@@ -172,7 +172,7 @@ prototypes:
             condition: 'getRootFormProperty("renderingOptions.templateVariant") == "version2"'
             properties:
               containerClassAttribute: 'form-element form-element-multiselect mb-3'
-              elementClassAttribute: 'form-control xlarge'
+              elementClassAttribute: 'form-select xlarge'
               elementErrorClassAttribute: ~
               labelClassAttribute: form-label
     formEditor:

typo3/sysext/form/Configuration/Yaml/FormElements/SingleSelect.yaml

@@ -135,7 +135,7 @@ prototypes:
             condition: 'getRootFormProperty("renderingOptions.templateVariant") == "version2"'
             properties:
               containerClassAttribute: 'form-element form-element-select mb-3'
-              elementClassAttribute: form-control
+              elementClassAttribute: form-select
               elementErrorClassAttribute: ~
               labelClassAttribute: form-label
     formEditor: