fix: fix inputs bug in launch_batch and add more tests

[kshyatt-aws]

Issue #, if available:

N/A

Description of changes:

Discovered a bug related to passing a vector of input dictionaries when launching a batch of tasks. Fixed that and added a variety of tests.

Testing done:

Tests pass locally.

Merge Checklist

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General

• [x] I have read the CONTRIBUTING doc
• [x] I used the commit message format described in CONTRIBUTING
• [x] I have updated any necessary documentation, including READMEs and API docs (if appropriate)

Tests

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• [x] I have added tests that prove my fix is effective or that my feature works (if appropriate)
• [x] I have checked that my tests are not configured for a specific region or account (if appropriate)

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[codecov-commenter]

Codecov Report

Base: 93.75% // Head: 94.87% // Increases project coverage by +1.12% :tada:

Coverage data is based on head (32764d0) compared to base (59885f7). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #47 +/- ## ========================================== + Coverage 93.75% 94.87% +1.12% ========================================== Files 33 33 Lines 3827 3828 +1 ========================================== + Hits 3588 3632 +44 + Misses 239 196 -43 ``` | [Impacted Files](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs) | Coverage Δ | | |---|---|---| | [src/qubit\_set.jl](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs#diff-c3JjL3F1Yml0X3NldC5qbA==) | `96.07% <100.00%> (+19.60%)` | :arrow_up: | | [src/task\_batch.jl](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs#diff-c3JjL3Rhc2tfYmF0Y2guamw=) | `92.95% <100.00%> (+8.67%)` | :arrow_up: | | [src/observables.jl](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs#diff-c3JjL29ic2VydmFibGVzLmps) | `97.33% <0.00%> (+0.66%)` | :arrow_up: | | [src/task.jl](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs#diff-c3JjL3Rhc2suamw=) | `96.42% <0.00%> (+5.05%)` | :arrow_up: | | [src/gates.jl](https://codecov.io/gh/awslabs/Braket.jl/pull/47?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs#diff-c3JjL2dhdGVzLmps) | `97.67% <0.00%> (+10.46%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=awslabs)

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