Quick change to disable synchronous calculation of resource size

[bjester]

Summary

Synchronous calculations of resource size are taking too long.

Description of the change(s) you made

Changes the constant used to determine whether it should try calculation synchronously or not such that it shouldn't try to do so

Manual verification steps performed

1. Open a small channel
2. Click Publish
3. You should observe a loading spinner until the resource size task completes
4. Verify you see the channel size once it does complete

References

Addresses: #3084
Follow up: #3089
Gherkin: integration_testing/features/publish-channel.feature

---

Contributor's Checklist

• Code is clean and well-commented
• Contributor has fully tested the PR manually
• If there are any front-end changes, before/after screenshots are included
• Critical user journeys are covered by Gherkin stories
• Any new interactions have been added to the QA Sheet
• Critical and brittle code paths are covered by unit tests

---

Reviewer's Checklist

This section is for reviewers to fill out.

• Automated test coverage is satisfactory
• PR is fully functional
• PR has been tested for accessibility regressions
• External dependency files were updated if necessary (yarn and pip)
• Documentation is updated
• Contributor is in AUTHORS.md

[codecov]

Codecov Report

Merging #3090 (367e008) into hotfixes (7ddca73) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@ Coverage Diff @@## hotfixes #3090 +/- ##
============================================
- Coverage 85.96% 85.96% -0.01% 
============================================
Files 305 304 -1 Lines 16478 16474 -4 ============================================
- Hits 14166 14162 -4 
Misses 2312 2312 

Impacted Files	Coverage Δ
...curation/contentcuration/tests/utils/test_nodes.py	95.23% <100.00%> (+0.04%)	⬆️
...contentcuration/tests/viewsets/test_contentnode.py	84.97% <100.00%> (+0.01%)	⬆️
contentcuration/contentcuration/utils/nodes.py	83.81% <100.00%> (ø)
...tentcuration/migrations/0123_auto_20210407_0057.py

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7ddca73...367e008. Read the comment docs.

[pcenov]

@bjester, after testing this change I can confirm that the the channel size is displayed now in the modal window. However for some reason it takes a lot of time before that happens even for a very small channel and I have an excellent internet connection.
For example I created a channel with just a single small imported resource (token: nozak-rugol) and it still took about 2 minutes of waiting before the size of the channel was calculated and displayed.

[radinamatic]

Confirming the findings by @pcenov: it takes almost 2 minutes to get the channel size calculated and for spinner to disappear on both channel with 82 resources and the one with just 2 resources 🤔

[bjester]

@pcenov@radinamatic Thank you for your testing insights! That is indeed a longer wait than expected. This change removed the synchronous calculation which forces the calculation to be queued for our async task workers. If there are a lot of tasks in the queue, that will slow down the processing, which is difficult to get a realistic read in a local development environment. Therefore it does seem that we should reinstate synchronous processing, but we should decrease the threshold from 5000 resources. I'll plan a follow up for next release!