Bugzilla

macOS, Thunderbird 128.2.1esr (64-bit).

These two errors show up in the Error Console, and then GLODA indexing gets stuck (Activity Manager show "Indexing messages" but it doesn't progress):
```
TypeError: RecurIterator._expandMap[this.rule.freq] is undefined
Ical.sys.mjs:5082:24
    setup_defaults resource:///modules/calendar/Ical.sys.mjs:5082
    init resource:///modules/calendar/Ical.sys.mjs:3949
    fromData resource:///modules/calendar/Ical.sys.mjs:3887
    RecurIterator resource:///modules/calendar/Ical.sys.mjs:3761
    iterator resource:///modules/calendar/Ical.sys.mjs:5387
    _expandComponent resource:///modules/calendar/Ical.sys.mjs:2882
    _ensureCoverage resource:///modules/calendar/Ical.sys.mjs:2791
    utcOffset resource:///modules/calendar/Ical.sys.mjs:2682
    convert_time resource:///modules/calendar/Ical.sys.mjs:2458
    convertToZone resource:///modules/calendar/Ical.sys.mjs:1531
    getInTimezone resource:///modules/CalDateTime.sys.mjs:133
    getItemDates resource:///modules/calendar/utils/calDateTimeFormatter.sys.mjs:453
    formatItemInterval resource:///modules/calendar/utils/calDateTimeFormatter.sys.mjs:474
    updateInvitationOverlay resource:///modules/calendar/utils/calInvitationUtils.sys.mjs:432
    setField resource:///modules/calendar/utils/calInvitationUtils.sys.mjs:380
    updateInvitationOverlay resource:///modules/calendar/utils/calInvitationUtils.sys.mjs:418
    createInvitationOverlay resource:///modules/calendar/utils/calInvitationUtils.sys.mjs:292
    convertToHTML resource:///modules/CalMimeConverter.sys.mjs:59
```
```
NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS: [JavaScript Error: "RecurIterator._expandMap[this.rule.freq] is undefined" {file: "resource:///modules/calendar/Ical.sys.mjs" line: 5082}]'[JavaScript Error: "RecurIterator._expandMap[this.rule.freq] is undefined" {file: "resource:///modules/calendar/Ical.sys.mjs" line: 5082}]' when calling method: [calIDateTime::getInTimezone] calDateTimeFormatter.sys.mjs:453
```
This seems related to bug 1907603 (fixed in 128.2.1esr).

While I no longer see "TypeError: aPart is nullMimeMessage.sys.mjs:142:7" since upgrading to 128.2.1esr, I'm still seeing the "TypeError: RecurIterator._expandMap[this.rule.freq] is undefined " and "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS ... calDateTimeFormatter.sys.mjs:453" errors (i.e., the 3rd error shown in [this comment](https://bugzilla.mozilla.org/show_bug.cgi?id=1907603#c4) is gone, but the 1st and 2nd errors remain), and indexing is still stuck.