Edit opacity from 0.8 to 0.5 and remove forBackdropFilter (#5291)

Update for #4836 

- edit primary and secondary transparency opacities from 0.8 to 0.5
- remove forBackdropFilter from themes
- update components referencing transparency/primary and
transparency/secondary to have the following backdrop-filter: blur(12px)
saturate(200%) contrast(50%) brightness(130%)

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Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-front/src/modules/activities/table/components/CommentChip.tsx

@@ -9,7 +9,7 @@ export type CommentChipProps = {
 
 const StyledChip = styled.div`
   align-items: center;
-  backdrop-filter: blur(6px);
+  backdrop-filter: blur(12px) saturate(200%) contrast(50%) brightness(130%);
 
   background: ${({ theme }) => theme.background.transparent.primary};
   border-radius: ${({ theme }) => theme.border.radius.md};