Fix for custom logical types in DatastreamIO

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 35 lines in your changes missing coverage. Please review.

Project coverage is 43.23%. Comparing base (b08c836) to head (5962e71). Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...tream/transforms/FormatDatastreamRecordToJson.java	0.00%	34 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1767 +/- ## ============================================ - Coverage 43.28% 43.23% -0.05% - Complexity 3516 3816 +300 ============================================ Files 832 832 Lines 48567 48596 +29 Branches 5224 5231 +7 ============================================ - Hits 21020 21012 -8 - Misses 25859 25889 +30 - Partials 1688 1695 +7 ``` | [Components](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [spanner-templates](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `63.60% <ø> (-0.04%)` | :arrow_down: | | [spanner-import-export](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `63.67% <ø> (-0.17%)` | :arrow_down: | | [spanner-live-forward-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `75.11% <ø> (ø)` | | | [spanner-live-reverse-replication](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `68.93% <ø> (ø)` | | | [spanner-bulk-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `84.19% <ø> (+0.05%)` | :arrow_up: | | [Files with missing lines](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [...tream/transforms/FormatDatastreamRecordToJson.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767?src=pr&el=tree&filepath=v2%2Fdatastream-common%2Fsrc%2Fmain%2Fjava%2Fcom%2Fgoogle%2Fcloud%2Fteleport%2Fv2%2Fdatastream%2Ftransforms%2FFormatDatastreamRecordToJson.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-djIvZGF0YXN0cmVhbS1jb21tb24vc3JjL21haW4vamF2YS9jb20vZ29vZ2xlL2Nsb3VkL3RlbGVwb3J0L3YyL2RhdGFzdHJlYW0vdHJhbnNmb3Jtcy9Gb3JtYXREYXRhc3RyZWFtUmVjb3JkVG9Kc29uLmphdmE=) | `35.64% <0.00%> (-3.98%)` | :arrow_down: | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1767/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform)