Discovery process never stops on `main` branch

[karrtikr]

Add "python.logging.level": "info" user setting, activate the extension and open the Python output channel. You'll see us continuously attempt to discover interpreters and never stop. #16151 is likely because of this.

cc @karthiknadig

[karthiknadig]

This issue started from this commit 54fb576

C:\GIT\s p\vscode-python>git bisect start

C:\GIT\s p\vscode-python>git bisect bad

C:\GIT\s p\vscode-python>git bisect good 21acd504e256686c2a7894a98f906ff0aec45513
Bisecting: a merge base must be tested
[84d798fe6e383bf501a3d980f735f4a626b88c1e] Preparing the release candidate. (#15900)

C:\GIT\s p\vscode-python>git bisect good
Bisecting: 32 revisions left to test after this (roughly 5 steps)
[8944c36b50b1de1a4e416fa310988f413336c1ac] Ensure venvPath and venvFolders setting can only be set at User or Remote settings (#15947)

C:\GIT\s p\vscode-python>git bisect good
Bisecting: 16 revisions left to test after this (roughly 4 steps)
[ed6f5177121ec94a4d481d5044f08f3f7fbf8341] Fix a reference issue in the Build workflow

C:\GIT\s p\vscode-python>git bisect good
Bisecting: 8 revisions left to test after this (roughly 3 steps)
[908684b3581e4956b41e12e9869d45a7522eea3b] Correct the vsix artifact name to be uploaded (#16140)

C:\GIT\s p\vscode-python>git bisect bad
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[8c86f10012aa4b249a87367632df96a95c2c7f42] Remove unused resources (#16125)

C:\GIT\s p\vscode-python>git bisect bad
Bisecting: 1 revision left to test after this (roughly 1 step)
[6b9a71a31d642b10905c4b764420a2eaa9177ff8] Drop dead env references in build workflow

C:\GIT\s p\vscode-python>git bisect good
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[54fb57655a1b1076cb2968b904535b8231c13d3a] Ignore environment related cache where appropriate (#16114)

C:\GIT\s p\vscode-python>git bisect bad  
54fb57655a1b1076cb2968b904535b8231c13d3a is the first bad commit
commit 54fb57655a1b1076cb2968b904535b8231c13d3a
Author: Kartik Raj <karraj@microsoft.com>
Date:   Tue May 4 10:30:07 2021 -0700

    Ignore environment related cache where appropriate (#16114)

 src/client/interpreter/interpreterService.ts          | 12 ++++++++----
 src/client/pythonEnvironments/legacyIOC.ts            |  1 +
 src/test/interpreters/interpreterService.unit.test.ts |  1 +
 3 files changed, 10 insertions(+), 4 deletions(-)

C:\GIT\s p\vscode-python>