fix: replace return with continue in updateApiMarkedBoards loop

[12somyasahu]

Closes #2130

Problem

In updateApiMarkedBoards (src/components/Board/Board.actions.js),
the guard inside the for await loop used return instead of continue:

if (!boardsIds.includes(board.id)) return;

This exits the entire async function when a board is missing from state,
silently abandoning all remaining boards that have markToUpdate: true.

Fix

Changed return to continue so the loop skips the removed board
and processes the remaining ones.

Changes

• 1 line changed in src/components/Board/Board.actions.js