Fixes aws_lb_listener datasource's default_action's target_group_arn

[tmarlok88]

Fixes #36459 where the default_action's target_group_arn is not filled in an aws_lb_listener datasource

Description

The default_action.target_group_arn attribute in an aws_lb_listener data source is empty.

Relations

Closes #36459

References

The bug was introduced in this PR: #35671

Output from Acceptance Testing

$ make testacc TESTARGS='-run=TestAccELBV2ListenerDataSource_basic' PKG=elbv2 ACCTEST_PARALLELISM=2 
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.2 test ./internal/service/elbv2/... -v -count 1 -parallel 2  -run=TestAccELBV2ListenerDataSource_basic -timeout 360m
=== RUN   TestAccELBV2ListenerDataSource_basic
=== PAUSE TestAccELBV2ListenerDataSource_basic
=== CONT  TestAccELBV2ListenerDataSource_basic
--- PASS: TestAccELBV2ListenerDataSource_basic (228.43s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elbv2	228.617s

...

[github-actions]

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[tmarlok88]

@gdavison This fix messes with your recent PR (mentioned in the description), please give some sanity check if you have the time.

[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccELBV2ListenerDataSource_\|TestAccELBV2Listener_Network_basic\|TestAccELBV2Listener_updateForwardBasic\|TestAccELBV2Listener_forwardWeighted' PKG=elbv2 ACCTEST_PARALLELISM=3
make: Verifying source code with gofmt...
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go1.22.5 test ./internal/service/elbv2/... -v -count 1 -parallel 3  -run=TestAccELBV2ListenerDataSource_\|TestAccELBV2Listener_Network_basic\|TestAccELBV2Listener_updateForwardBasic\|TestAccELBV2Listener_forwardWeighted -timeout 360m
=== RUN   TestAccELBV2ListenerDataSource_tags
=== PAUSE TestAccELBV2ListenerDataSource_tags
=== RUN   TestAccELBV2ListenerDataSource_basic
=== PAUSE TestAccELBV2ListenerDataSource_basic
=== RUN   TestAccELBV2Listener_Network_basic
=== PAUSE TestAccELBV2Listener_Network_basic
=== RUN   TestAccELBV2Listener_updateForwardBasic
=== PAUSE TestAccELBV2Listener_updateForwardBasic
=== RUN   TestAccELBV2Listener_forwardWeighted
=== PAUSE TestAccELBV2Listener_forwardWeighted
=== CONT  TestAccELBV2ListenerDataSource_tags
=== CONT  TestAccELBV2Listener_updateForwardBasic
=== CONT  TestAccELBV2Listener_Network_basic
--- PASS: TestAccELBV2ListenerDataSource_tags (191.72s)
=== CONT  TestAccELBV2ListenerDataSource_basic
--- PASS: TestAccELBV2Listener_updateForwardBasic (224.24s)
=== CONT  TestAccELBV2Listener_forwardWeighted
--- PASS: TestAccELBV2Listener_Network_basic (235.71s)
--- PASS: TestAccELBV2ListenerDataSource_basic (202.20s)
--- PASS: TestAccELBV2Listener_forwardWeighted (249.19s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/elbv2	478.246s

[ewbankkit]

@tmarlok88 Thanks for the contribution 🎉 👏.

[github-actions]

This functionality has been released in v5.59.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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