Netlify env branch/context needs to be case sensitive

[zbobbert]

Describe the bug

When setting (or unsetting) Netlify branch environment variables using the CLI, the --context parameter seems to be converted to lowercase, resulting in the environment variables being associated with the wrong branch name.

Steps to reproduce

Run netlify env:set test_env_var test_value --context "Case-Sensitive"
I expect the resulting variable to be created under the "Case-Sensitive" branch, but instead it is created under the "case-sensitive" branch.

Configuration

[build]
command = "npm run build"
publish = ".next"

[[plugins]]
package = "netlify-plugin-cypress"

Environment

System:
OS: Linux 5.15 Ubuntu 22.04.4 LTS 22.04.4 LTS (Jammy Jellyfish)
CPU: (16) x64 AMD Ryzen 7 7800X3D 8-Core Processor
Memory: 3.14 GB / 30.49 GB
Container: Yes
Shell: 5.8.1 - /usr/bin/zsh
Binaries:
Node: 20.11.1 - ~/.volta/tools/image/node/20.11.1/bin/node
Yarn: 1.22.10 - ~/.volta/bin/yarn
npm: 10.2.4 - ~/.volta/tools/image/node/20.11.1/bin/npm

netlify --version
netlify-cli/17.21.1 linux-x64 node-v20.11.1

[zbobbert]

Here's my workaround using the Netlify API:

SET_ENV_DATA=$(jq -n \
  --arg account_id "$NETLIFY_ACCOUNT_ID" \
  --arg site_id "$NETLIFY_SITE_ID" \
  --arg context_parameter "$BRANCH_NAME" \
  --arg key "test_env_var" \
  --arg value "test_value" \
  '{ $account_id, $key, $site_id, body: { context: "branch", $context_parameter, $value } }')
UPDATED_ENV_DATA=$(netlify api setEnvVarValue --data "${SET_ENV_DATA}")```