Improve performance of demo workspace - Rename getImageAbsoluteURIOrBase64 function (#6282)

### Description

1. This PR is a continuation of a previous PR:
https://github.com/twentyhq/twenty/pull/6201#pullrequestreview-2175601222

2. One test case was removed here:
`packages/twenty-front/src/utils/image/__tests__/getImageAbsoluteURI.test.ts`
because since we are not handling base64 images anymore, the result is
the same of the last test case. Would you rather we update the test
instead?


### Refs

- #3514
- https://github.com/twentyhq/twenty/pull/6201

### Demo


https://www.loom.com/share/4f32b535c77a4d418e319b095d09452c?sid=df34adf8-b013-44ef-b794-d54846f52d2d

Fixes #3514

---------

Co-authored-by: gitstart-twenty <gitstart-twenty@users.noreply.github.com>

packages/twenty-front/src/modules/ui/navigation/navigation-drawer/components/MultiWorkspaceDropdownButton.tsx

@@ -14,7 +14,7 @@ import { DEFAULT_WORKSPACE_LOGO } from '@/ui/navigation/navigation-drawer/consta
 import { MULTI_WORKSPACE_DROPDOWN_ID } from '@/ui/navigation/navigation-drawer/constants/MulitWorkspaceDropdownId';
 import { useWorkspaceSwitching } from '@/ui/navigation/navigation-drawer/hooks/useWorkspaceSwitching';
 import { NavigationDrawerHotKeyScope } from '@/ui/navigation/navigation-drawer/types/NavigationDrawerHotKeyScope';
-import { getImageAbsoluteURIOrBase64 } from '~/utils/image/getImageAbsoluteURIOrBase64';
+import { getImageAbsoluteURI } from '~/utils/image/getImageAbsoluteURI';
 
 const StyledLogo = styled.div<{ logo: string }>`
   background: url(${({ logo }) => logo});
@@ -88,7 +88,7 @@ export const MultiWorkspaceDropdownButton = ({
         <StyledContainer>
           <StyledLogo
             logo={
-              getImageAbsoluteURIOrBase64(
+              getImageAbsoluteURI(
                 currentWorkspace?.logo === null
                   ? DEFAULT_WORKSPACE_LOGO
                   : currentWorkspace?.logo,
@@ -111,7 +111,7 @@ export const MultiWorkspaceDropdownButton = ({
               avatar={
                 <StyledLogo
                   logo={
-                    getImageAbsoluteURIOrBase64(
+                    getImageAbsoluteURI(
                       workspace.logo === null
                         ? DEFAULT_WORKSPACE_LOGO
                         : workspace.logo,