feat: make full table rows clickable to open drawer

[markshenouda]

Closing issues

closes #293

Description

Makes entire table rows clickable in the CCIP Directory to open the drawer, instead of only the chain/token name being clickable.

Changes

• Move onClick handler from the name button to the <tr> element in ChainTable and TokenChainsTable
• Convert name <button> elements to <span> since the row itself is now the interactive element
• Add stopPropagation to address links and copy buttons in AddressReact to prevent row click when interacting with those elements
• Add cursor: pointer styling for clickable rows
• Preserve keyboard accessibility with role="button", tabIndex, and onKeyDown handlers