fix(cypress): make test chart time range deterministic

[villebro]

SUMMARY

Cypress is currently failing due to a test chart having a "40 years ago" time range, causing the row count to drop by one every year (hence it's now 25 rows and not 26 rows):

Here we're changing the time range to be deterministic so we don't have to do this change annually. In addition, since and until are moved into time_range from the birth names defaults, as they're overlapping with time_range.

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #22567 (0d9f45b) into master (734d423) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #22567      +/-   ##
==========================================
- Coverage   66.91%   66.89%   -0.03%     
==========================================
  Files        1851     1851              
  Lines       70709    70709              
  Branches     7766     7766              
==========================================
- Hits        47316    47299      -17     
- Misses      21371    21387      +16     
- Partials     2022     2023       +1     

Flag	Coverage Δ
hive	52.46% <ø> (ø)
mysql	77.95% <ø> (ø)
postgres	78.01% <ø> (-0.02%)	⬇️
presto	52.36% <ø> (ø)
python	81.21% <ø> (-0.07%)	⬇️
sqlite	?
unit	51.19% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/examples/birth_names.py	70.00% <ø> (ø)
superset/db_engine_specs/sqlite.py	89.28% <0.00%> (-7.15%)	⬇️
superset/reports/commands/log_prune.py	85.71% <0.00%> (-3.58%)	⬇️
superset/utils/celery.py	86.20% <0.00%> (-3.45%)	⬇️
superset/connectors/sqla/utils.py	87.00% <0.00%> (-2.00%)	⬇️
superset/result_set.py	96.42% <0.00%> (-1.43%)	⬇️
superset/commands/importers/v1/utils.py	92.20% <0.00%> (-1.30%)	⬇️
superset/views/core.py	74.37% <0.00%> (-0.61%)	⬇️
superset/common/query_object.py	93.84% <0.00%> (-0.52%)	⬇️
superset/reports/commands/execute.py	91.66% <0.00%> (-0.34%)	⬇️
... and 2 more

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[zhaoyongjie]

LGTM