Wallets: on mobile browsers, currently-selected wallet does not display if platform changed

[harding]

For example, there are currently eight wallets on the iOS platform. In the case described below, only seven of the wallets are displayed (which wallet is not displayed depends on what actions you took earlier).

This bug was discovered by @crwatkins (thanks!). I suspect it's in the JS and I'll try to take a look later today.

Steps to reproduce

1. On a mobile browser (I tested with current Chrome for Android), go to https://bitcoin.org/en/choose-your-wallet . It will automatically show you all wallets in the Mobile category
2. Scroll down and select any one of the eight wallets that supports iOS. In the screenshots below, I selected BreadWallet. The page automatically scrolls down to show you the wallet details.
3. Scroll back up and select iOS
4. Scroll down and only seven wallets will be shown. Specifically, the wallet you previously selected (BreadWallet in my case) will not be shown.

For comparison, reload the page and skip step 2; then all eight wallets are shown.

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[harding]

Fixed in 2dc0269