* Start moving user agent utils into shared package * Remove inobounce and stop exporting isIosSafari Based on some quick testing on my phone, inobounce is no longer needed. Both local and Community: 1. Let you overscroll on the landing and login pages 2. Don't overscroll in a channel, a thread, or the LHS while fully zoomed out 3. Do let you overscroll when zoomed in That also lets me reduce the size of the interface for utils/user_agent. * Remove unneeded exports and unused functions * Remove outdated workarounds from FileUpload component These were only needed to support a 10 year old version of iOS Chrome and the classic app. * Remove useOrientationHandler This was added in https://github.com/mattermost/mattermost-webapp/pull/2504, but I don't think the extra complexity is worth keeping it around when we mostly support mobile view for desktop accessibility reasons. * Replace isIosWeb/isAndroidWeb with isIos/isAndroid These were previously needed to differentiate between the mobile web app and the classic app. * Replace isMobileApp with isMobile Similar to the last commit, we used to need to differentiate between the mobile web and the classic app. For most places, I just replaced isMobileApp with isMobile, but I removed the check in ProductMenuList because we want to show that link on mobile web. * Move isInternetExplorer and isEdge out of the shared package Those should be removed, so I don't want to include them in the shared package at all. I also renamed isChromiumEdge to just isEdge since that should be its name once the old ones are removed. * Change how functions are re-exported to fix tests * Update web app code to use shared user agent utils directly * Removed useless mock * Fix how tests mock utils/user_agent now that it's fully moved * Actually export user_agent utils from shared package
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