RFR: 8167: [Accessibility]: 'Click here to start using JDK Mission Control' button does not have any function to open JDK mission control

[Suchita Chaturvedi]

On Welcome page, User move focus to "Click here to start using JDK Mission Control" button and press Enter but it does not have any function to open JDK mission control.

This issue was reported as part of accessibility testing requirement. From the accessibility point of view, the user will be stuck on welcome page and won't be able to proceed further.

<img width="959" alt="image" src="https://github.com/openjdk/jmc/assets/11155712/605ba3a3-991d-4367-8f30-6bbf8a3db56f">

-------------

Commit messages:
 - 8167: [Accessibility]: 'Click here to start using JDK Mission Control' button does not have any function to open JDK mission control

Changes: https://git.openjdk.org/jmc/pull/547/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=547&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8167
  Stats: 12 lines in 1 file changed: 11 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jmc/pull/547.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/547/head:pull/547

PR: https://git.openjdk.org/jmc/pull/547