Draft: B/Resolve issues around uploading to S3

[keonp]

Display potential errors in modal when attempting to upload a file to S3 or checking for file's existing in S3.

The following is wrapped in a try...catch block to handled errors:

      pipelineSpecs = await uploadParameterBlocks.mutateAsync({
        pipelineId: pipeline.id,
        executionId: executionId,
        pipelineSpecs: pipelineSpecs,
        buffer: pipeline.buffer,
      });

To be updated and merged after: execution-id-frontend

[keonp]

changes incorporated in recent merges. closing.