Enhances element detection for icon-only buttons using tooltip/aria-label text.

Problem

Icon-only buttons (e.g., a + button with only a tooltip saying "Create Test") were often missed by the browser agent. When a button lacks visible text content and has no aria-label, but has a tooltip (via HTML title attribute or JS tooltip library data attributes), the agent could not reliably identify or describe the element.

Changes

• clickable_elements.py: Added title, data-tooltip, data-original-title, data-bs-title, data-title to icon detection attributes — small icon-sized elements with tooltip attributes are now detected as interactive
• views.py: Added tooltip data attributes to DEFAULT_INCLUDE_ATTRIBUTES (shown to LLM), STATIC_ATTRIBUTES (used for element hashing), and get_meaningful_text_for_llm() priority chain
• service.py: Added tooltip data attributes to hidden element text fallback, pagination detection all_text, and pagination button text fallback
• utils.py: Added tooltip data attributes to SAFE_ATTRIBUTES for CSS selector generation
• agent/service.py: Added title to history replay matching attributes and element error formatting
• tools/utils.py: Added title and data-tooltip to click description key attributes

Fixes #4801

Summary by cubic

Detects icon-only buttons using tooltip and aria-label text so the browser agent stops missing them; supports common tooltip attributes across detection, serialization, and replay. Fixes #4801.

• Bug Fixes
  • Icon detection: treat small elements with title, data-tooltip, data-original-title, data-bs-title, data-title as interactive.
  • DOM serialization and selectors: include tooltip attrs in serialized attributes, element hashing, and safe attributes.
  • Text fallbacks and pagination: use tooltip attrs when deriving element text and when detecting pagination.
  • History replay and errors: include title in element matching and error messages.
  • Click descriptions: add title and data-tooltip to improve action summaries.

^{Written for commit b827366. Summary will update on new commits.}