Z index UI issue

[JagadeeshSwarna3]

PR Description

Issue:
In the Account Group Mapping report, when selecting account groups in the rows, the awesomplete dropdown is rendered inside a scrollable container. As a result, it gets clipped by the container's boundaries, regardless of the z-index value. This creates a poor user experience where dropdown options are partially or entirely hidden.

Technical Details:

• If overflow: visible is set on the scrollable container, the dropdown appears correctly, but scrolling is lost.
• If overflow: auto or overflow: scroll is used, scrolling works, but the dropdown gets clipped.

Fix:
As a temporary workaround, custom CSS was injected via the onload function to set overflow: visible and adjust the z-index. This makes the dropdown visible but breaks scrollability.

As per Saif’s guidance, the preferred solution is to fix this via the original SCSS files. I attempted updates in:

• public/scss/common/awesomeplete.scss
• public/scss/common/controls.scss
• public/scss/desk/frappe_datatable.scss

However, these changes did not fully resolve the issue. Therefore, this PR includes a temporary CSS patch to improve dropdown usability until a more permanent SCSS-based solution is identified.

Closes #433