feat(openchallenges): add caption showing undatedChallengeCounts in timeline plot

[rrchai]

• closes [Task] Inconsistency between the total number of challenges in bar plot and the number listed in the challenge search #2339

Depends on

• fix(openchallenges): synchronize OC microservices with the API description #2354
• Grand challenges data is added in main

Changelog

• add caption about the number of missing challenge due to lack of start date in the plot

Preview

Note

The text in the preview has been updated to "*An additional 50 challenges without known start dates are not displayed."
The static value for the challenge without start date will be update with DB update as well.

[tschaffter]

See above comment

[tschaffter]

@rrchai The challenge service container works for me (see below).

If the container keeps restarting, you could try to remove the build folder of the service with ./gradlew clean, then rebuild the service BUT without relying on the Nx cache: nx build openchallenges-challenge-service --skip-nx-cache. I have the feeling that it's this cache that may have been poisoned. Running this command should properly generate the build folder and update the cache. Only then you could build the image again.

If the issue persists, you could rebuild the dev container to start fresh (remember to run the command workspace-install immediately after).

🤞

HTTP/1.1 200 
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-Frame-Options: DENY
Content-Type: application/json
Transfer-Encoding: chunked
Date: Tue, 14 Nov 2023 02:58:44 GMT
Connection: close

{
  "years": [
    "2007",
    "2008",
    "2009",
    "2010",
    "2011",
    "2012",
    "2013",
    "2014",
    "2015",
    "2016",
    "2017",
    "2018",
    "2019",
    "2020",
    "2021",
    "2022",
    "2023"
  ],
  "challengeCounts": [
    5,
    8,
    12,
    16,
    21,
    27,
    31,
    38,
    45,
    54,
    80,
    91,
    110,
    129,
    177,
    203,
    226
  ],
  "undatedChallengeCount": 50
}

[rrchai]

for future improvement: as @tschaffter suggests, the caption part can be separated from plot itself and moved to html.

[vpchung]

LGTM. I do have one small suggestion to the language used.

[tschaffter]

The PR looks good but I suggest rephrasing the caption to sound more positive (avoid double negative terms). See suggestions above.