fix(openchallenges): improve query parameter management using location service

[rrchai]

• fixes [Bug] Reset scrolling position when navigating to another page (Take 2) #2154

Changelogs

• Replace router.navigate with location.replaceState() to update url params without initiating navigation or scroll restoration
• Trigger API call by updating query once params are updated
• Refactor search pages' *_component.ts files
  • challenge-search: 608 -> 397 lines
  • org-search: 332 -> 316 lines (could reduce more by moving codes of generating orgCard to a global service, but save for a future pr)

[tschaffter]

The code refactoring looks great!

I'm having a CORS issue on my end that prevent the challenges from loading in the search page. I will check if this issue is also in main.

UPDATE: The CORS issue was because a few ports were not properly forwarded by VS Code, including the port of the API gateway and challenge service. Stopping the forwarding of these ports and forwarding them again using VS Code UI solved the issue (see #2279 for more details).

[tschaffter]

@rrchai Filtering orgs by "Contribution Role" does not filter the results.

[tschaffter]

See comment above.