Fix snake_case decision point truncation

[zackcl]

Resolves #3234

Changes

• Added a reusable break-all utility class.
• Applied character-level word breaking to decision point displays in the Payloads table.
• Applied the same behavior to the Decision Points table for consistency.
• Preserved the existing line clamp and overflow tooltip behavior.
• Left other line-clamped content unchanged to avoid affecting natural-language and multi-line text.

[Copilot]

Pull request overview

Updates decision point text rendering so long snake_case/kebab-case targets can break at character boundaries before the single-line clamp applies, preventing premature ellipsis truncation in the experiment details tables.

Changes:

• Added a global .break-all utility class (word-break: break-all).
• Applied .break-all alongside existing line-clamp-1 usage for decision point displays in the Payloads and Decision Points tables.
• Kept the existing overflow-tooltip + line-clamp behavior unchanged for other clamped fields.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
packages/frontend/projects/upgrade/src/styles.scss	Adds a reusable .break-all utility to allow character-level breaking.
packages/frontend/projects/upgrade/src/app/features/dashboard/experiments/pages/experiment-details-page/experiment-details-page-content/experiment-payloads-section-card/experiment-payloads-table/experiment-payloads-table.component.html	Applies break-all to the decision point cell text to avoid early truncation in the Payloads table.
packages/frontend/projects/upgrade/src/app/features/dashboard/experiments/pages/experiment-details-page/experiment-details-page-content/experiment-decision-points-section-card/experiment-decision-points-table/experiment-decision-points-table.component.html	Applies the same break-all behavior for consistency in the Decision Points table.

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