VAR-73 | show warning when select disabled slot by mistake

[midori0507]

This is temp solution to fix the bug, need refactor further.

[codecov-io]

Codecov Report

Merging #930 into develop will decrease coverage by 0.04%.
The diff coverage is 73.33%.

@@             Coverage Diff             @@
##           develop     #930      +/-   ##
===========================================
- Coverage    91.78%   91.73%   -0.05%     
===========================================
  Files          217      217              
  Lines         2847     2855       +8     
  Branches       499      500       +1     
===========================================
+ Hits          2613     2619       +6     
- Misses         207      208       +1     
- Partials        27       28       +1

Impacted Files	Coverage Δ
...servation-calendar/ReservationCalendarContainer.js	95.74% <ø> (ø)	⬆️
app/pages/resource/reservation-calendar/utils.js	91.22% <100%> (+3.5%)	⬆️
...ource/reservation-calendar/time-slots/TimeSlots.js	86.58% <100%> (ø)	⬆️
...source/reservation-calendar/time-slots/TimeSlot.js	79.48% <63.63%> (-7.61%)	⬇️

---

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 278fb39...4713ef0. Read the comment docs.