UI: Fix download service

[hellobontempo]

Description

Not sure when - but at some point the "Export activity" button stopped working. I'm not really sure what caused it, but removing the appendage of DOM objects resolved the issue. The binary is working fine, so it could also just be an issue on :4200.

TODO only if you're a HashiCorp employee

• Backport Labels: If this fix needs to be backported, use the appropriate backport/ label that matches the desired release branch. Note that in the CE repo, the latest release branch will look like backport/x.x.x, but older release branches will be backport/ent/x.x.x+ent.
  • LTS: If this fixes a critical security vulnerability or severity 1 bug, it will also need to be backported to the current LTS versions of Vault. To ensure this, use all available enterprise labels.
• ENT Breakage: If this PR either 1) removes a public function OR 2) changes the signature
  of a public function, even if that change is in a CE file, double check that
  applying the patch for this PR to the ENT repo and running tests doesn't
  break any tests. Sometimes ENT only tests rely on public functions in CE
  files.
• Jira: If this change has an associated Jira, it's referenced either
  in the PR description, commit message, or branch name.
• RFC: If this change has an associated RFC, please link it in the description.
• ENT PR: If this change has an associated ENT PR, please link it in the
  description. Also, make sure the changelog is in this PR, not in your ENT PR.

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've documented the impact of any changes to security controls.

Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.

[hellobontempo]

This isn't needed and once deleted, the download succeeded.

Strange enough, the download would also work if the method was called twice. Adding a fake download call would yield a successful download (with the actual contents arg, not the faked data)....super strange

  exportChartData = task({ drop: true }, async (filename) => {
  // call download with test data
  this.download.download('test', 'hello world', 'txt');
    try {
      const contents = await this.getExportData();
      this.download.download(filename, contents, this.exportFormat);
      this.showExportModal = false;
    } catch (e) {
      this.downloadError = e.message;
    }
  });

[github-actions]

Build Results:
All builds succeeded! ✅

[github-actions]

CI Results:
All Go tests succeeded! ✅

[hc-github-team-secure-vault-core]

Copy workflow completed!

From	To	Error
hashicorp/vault#2749146823	hashicorp/vault-enterprise#2749540917

[hellobontempo]

Closing to merge this directly into enterprise