refactor(api): Rename EMPTY to ALL for partial tip API

[Laura-Danielle]

Overview

The good people of Opentrons have decreed that EMPTY shall henceforth be named ALL. That is ALL.

[codecov]

Codecov Report

Merging #14034 (af99121) into edge (5367bdd) will decrease coverage by 0.02%.
Report is 4 commits behind head on edge.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             edge   #14034      +/-   ##
==========================================
- Coverage   70.63%   70.61%   -0.02%     
==========================================
  Files        2507     2507              
  Lines       70987    71122     +135     
  Branches     8805     8874      +69     
==========================================
+ Hits        50139    50221      +82     
- Misses      18683    18728      +45     
- Partials     2165     2173       +8     

Flag	Coverage Δ
app	67.57% <ø> (-0.10%)	⬇️
g-code-testing	96.44% <ø> (ø)
notify-server	89.13% <ø> (ø)
protocol-designer	45.62% <ø> (ø)
shared-data	73.61% <ø> (ø)
step-generation	86.60% <ø> (ø)

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

Files	Coverage Δ
api/src/opentrons/protocol_api/__init__.py	100.00% <ø> (ø)
...i/src/opentrons/protocol_api/instrument_context.py	89.49% <ø> (ø)
api/src/opentrons/protocol_engine/__init__.py	100.00% <ø> (ø)
api/src/opentrons/protocol_engine/types.py	97.50% <ø> (ø)

... and 8 files with indirect coverage changes

[ecormany]

Awesome, I updated the separate dosctring PR is to reflect this change.

I'll defer to an engineer to give ✅ to the code.

[sanni-t]

ALL is well