When converting a time:Civil with time-zone information to a string using time:civilToString API error is thrown

[ayeshLK]

Description:

$subject

Consider the following code segment:

time:TimeZone zone = check new ("America/New_York");
time:Civil civilTime = zone.utcToCivil(utc);
string civilDate = check time:civilToString(civilTime);
io:println(civilDate);

This would throw following error:

error: civil.utcOffset must not be null

Related to: #778

[ayeshLK]

As per the offline discussion we had this is a bug fix and might break some scenarios where developers used the time:Civil records without proper utc-offsets. Hence, it was agreed to release a minor version of the package on top of 2201.8.x distribution.

Tagging @daneshk @TharmiganK @ThisaruGuruge

[github-actions]

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      - Reason/EngineeringMistake - The issue occurred due to a mistake made in the past.
      - Reason/Regression - The issue has introduced a regression.
      - Reason/MultipleComponentInteraction - Issue occured due to interactions in multiple components.
      - Reason/Complex - Issue occurred due to complex scenario.
      - Reason/Invalid - Issue is invalid.
      - Reason/Other - None of the above cases.