[RNMobile] Use ActivityIndicator to display media upload progress#6615

wpmobilebot wants to merge 18 commits into

trunkwordpress-mobile/gutenberg-mobile:trunkfrom

version-toolkit/gutenberg/rnmobile/use-activity-indicator-media-upload-progresswordpress-mobile/gutenberg-mobile:version-toolkit/gutenberg/rnmobile/use-activity-indicator-media-upload-progressCopy head branch name to clipboard