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Observe TEXT_ATTRIBUTE_CHANGED in vbuf (#11790)
The virtual buffer (vbuf) previously did not observe IA2_EVENT_TEXT_ATTRIBUTE_CHANGED events. While use cases for this seem slim, we can't rule them out, and we don't believe observing this event will be a detriment. In addition this will provide a work-around for issues such as #11761 until Chrome is updated to send IA2_EVENT_OBJECT_ATTRIBUTE_CHANGED.
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nvdaHelper/vbufBackends/gecko_ia2/gecko_ia2.cpp

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@@ -1159,6 +1159,7 @@ void CALLBACK GeckoVBufBackend_t::renderThread_winEventProcHook(HWINEVENTHOOK ho
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case EVENT_OBJECT_SELECTIONREMOVE:
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case EVENT_OBJECT_SELECTIONWITHIN:
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case IA2_EVENT_OBJECT_ATTRIBUTE_CHANGED:
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case IA2_EVENT_TEXT_ATTRIBUTE_CHANGED:
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case EVENT_OBJECT_HIDE:
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break;
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default:

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