chore: use pixels for margins and paddings (#30023)

apps/meteor/app/emoji-emojione/client/emojione-sprites.css

apps/meteor/app/emoji-emojione/lib/generateEmojiIndex.mjs

apps/meteor/app/theme/client/imports/components/emoji.css

apps/meteor/app/theme/client/imports/general/variables.css

apps/meteor/app/ui-message/client/popup/ComposerBoxPopup.tsx

...nents/composerBoxPopupPreview/ComposerBoxPopupPreview.tsx

...teor/client/components/BurgerMenu/BurgerBadge.stories.tsx

.../meteor/client/components/BurgerMenu/BurgerMenuButton.tsx

apps/meteor/client/components/BurgerMenu/Wrapper.tsx

apps/meteor/client/components/ConfirmOwnerChangeModal.tsx

...mponents/Contextualbar/ContextualbarScrollableContent.tsx

apps/meteor/client/components/FilterByText.tsx

...teor/client/components/GenericModal/withDoNotAskAgain.tsx

.../components/GenericResourceUsage/GenericResourceUsage.tsx

...nts/GenericResourceUsage/GenericResourceUsageSkeleton.tsx

...r/client/components/GenericTable/GenericTable.stories.tsx

apps/meteor/client/components/GenericTable/GenericTable.tsx

...client/components/GenericTable/GenericTableLoadingRow.tsx

...ient/components/GenericUpsellModal/GenericUpsellModal.tsx

apps/meteor/client/components/InfoPanel/InfoPanelAction.tsx