Fix ImGui::PushFont 2-argument API breakage in overlay

[Copilot]

ImGui updated PushFont to require an explicit size parameter, breaking the api_experimental release build on VS2026.

Changes

• overlay_experimental/steam_overlay.cpp: Updated two PushFont calls missing the size argument to match the rest of the file

// Before
ImGui::PushFont(font_default);

// After
ImGui::PushFont(font_default, 0.0f);  // 0.0f = inherit default font size

[Copilot]

🟢 Approval recommended

The change is minimal, consistent with existing PushFont(..., 0.0f) usage in the same file, and correctly addresses the documented API break.

Pull request overview

Updates the experimental Steam overlay to match a breaking change in Dear ImGui’s ImGui::PushFont API by supplying the newly required size argument, restoring build compatibility for the api_experimental release configuration.

Changes:

• Updated render_gallery_window() to call ImGui::PushFont(font_default, 0.0f).
• Updated render_pinned_screenshot() to call ImGui::PushFont(font_default, 0.0f).

File summaries

File	Description
overlay_experimental/steam_overlay.cpp	Adds the required size parameter to two ImGui::PushFont calls to match the file’s existing usage pattern and fix the ImGui API breakage.

Review details

• Files reviewed: 1/1 changed files
• Comments generated: 0
• Review effort level: Lite

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