Change the alignment of buttons in the variables drawer to match guidelines
### Release notes ### Problem to solve The contextual actions in a drawer should be left aligned https://design.gitlab.com/components/drawer The \`Add/Edit Variable drawer has it right aligned. | Before | After | |--------|-------| | ![Screenshot_2023-12-11_at_11.22.09_AM](https://gitlab.com/gitlab-org/gitlab/uploads/3d7cf8bb08ca9f7cdb092ac7d7c7fb11/Screenshot_2023-12-11_at_11.22.09_AM.png){width=328 height=236} | ![Screenshot_2023-12-11_at_11.22.57_AM](https://gitlab.com/gitlab-org/gitlab/uploads/01ca933b42fc7677da819ef8e0149020/Screenshot_2023-12-11_at_11.22.57_AM.png) | ### Intended users ### User experience goal > Left aligned, except in right-to-left languages where they are right aligned and the order is the same. ### Proposal left align the buttons. ### Further details ### Permissions and Security ### Documentation ### Availability & Testing ### Available Tier ### Feature Usage Metrics ### What does success look like, and how can we measure that? ### What is the type of buyer? ### Is this a cross-stage feature? ### What is the competitive advantage or differentiation for this feature? ### Links / references <!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION --> *This page may contain information related to upcoming products, features and functionality. It is important to note that the information presented is for informational purposes only, so please do not rely on the information for purchasing or planning purposes. Just like with all projects, the items mentioned on the page are subject to change or delay, and the development, release, and timing of any products, features, or functionality remain at the sole discretion of GitLab Inc.* <!-- triage-serverless v3 PLEASE DO NOT REMOVE THIS SECTION -->
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