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This change ensures that all component extensions are allowed to be activated  despite having some inapplicable disable reasons set.

In particular, this fixes any specific observed on-device instances where ChromeVox or tts had a disable reason of blocked by policy which prevented it from being activated.

Bug: 946839,947305
Test: manually. With a device enterprise enrolled, push down kiosk apps to the device from an admin console. Ensure that ChromeVox still works on all screens.
Change-Id: I2cedafeb16d4420702188f1516825ce1bad52802
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1553017
Commit-Queue: David Tseng <dtseng@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#648464}