Scanner fails if SQL contains an array

If a sql_query in an AppMap contains an array, an exception gets thrown and scanning hangs. For example, if this AppMap is scanned
test_ranking_size_is_limited.appmap.json.gz, this happens:

ajp@Alans-MacBook-Pro r % npx @appland/scanner scan --all -f test_ranking_size_is_limited.appmap.json
Using scanner configuration file /Users/ajp/.npm/_npx/c11b5b1848416993/node_modules/@appland/scanner/built/sampleConfig/default.yml
Scanning [██████████████████░░░░░░░░░░░░░░░░░░░░░░] 45% | 5/11Cannot read properties of null (reading 'type')
Scanning [████████████████████████████████████░░░░] 90% | 10/11

The exception gets thrown from this statement:
https://github.com/applandinc/appmap-js/blob/main/packages/models/src/event/hash.js#L13 , because value is null.

This particular case is caused by https://github.com/applandinc/sql-parser/issues/10. But, in general, abstractSqlAstJSON should be prepared for value to be null.

Start in packages/models/src/event/hash.js at the linked statement where value.type is read, then reproduce the failure with the provided AppMap and npx @appland/scanner scan --all -f test_ranking_size_is_limited.appmap.json. Done means scanning an AppMap containing a SQL array no longer throws or hangs when the parsed value is null.