ROU-10908: Align DataGrid cells vertically to the center (#443)

This PR is for fixing the align of the content in the cells.

### What was happening
* The visual experience of editing DataGrid cells was undesirable.

### What was done
* All DataGrid cells are now vertically aligned to the center, including
when being edited.

### Checklist
* [x] tested locally
* [ ] documented the code
* [x] clean all warnings and errors of eslint
* [ ] requires changes in OutSystems (if so, provide a module with
changes)
* [ ] requires new sample page in OutSystems (if so, provide a module
with changes)

Author: OS-pedrolourenco

styles/Grid.css

@@ -163,21 +163,31 @@
     }
 }
 
-.wj-hasdropdown input.wj-grid-editor.wj-form-control {
-    padding-right: 18px; /* to account for arrow width */
-}
-
-.wj-cell.wj-hasdropdown.wj-align-left {
-    display: block;
-}
-
 .wj-flexgrid .wj-grid-editor,
 .wj-flexgrid .wj-cell.wj-hasdropdown .wj-btn.wj-btn-glyph.wj-right {
     height: auto;
 }
 
-.wj-flexgrid .wj-cell.wj-hasdropdown .wj-dropdown.wj-inputdate input {
-    width: 100%;
+.is-ltr .wj-cell:has(.wj-elem-dropdown) {
+    padding-right: 30px;
+}
+.is-rtl .wj-cell:has(.wj-elem-dropdown) {
+    padding-left: 30px;
+}
+.wj-cell.wj-hasdropdown.wj-align-left {
+    position: relative;
+}
+.is-ltr .wj-cell:not(.wj-header) > .wj-elem-dropdown,
+.is-rtl .wj-cell:not(.wj-header) > .wj-elem-dropdown {
+    position: absolute;
+    top: 50%;
+    transform: translateY(-50%);
+}
+.is-ltr .wj-cell:not(.wj-header) > .wj-elem-dropdown {
+    right: 10px;
+}
+.is-rtl .wj-cell:not(.wj-header) > .wj-elem-dropdown {
+    left: 10px;
 }
 
 .wj-flexgrid .wj-header.wj-cell label:before {