[Bug]DevUI freezes/crashes browser when inspecting tool logs

## 🔴 Required Information

**Describe the Bug:**
In the new DevUI (introduced in v1.24.0 and present in v1.24.1), clicking on a tool execution log in the chat history to view its details causes severe rendering issues. After viewing the details in the left-hand panel for a few seconds, the screen glitches, leading to a complete freeze or crash of the Chrome browser.

**Steps to Reproduce:**
1. Start the DevUI by running `adk web`.
2. Start a chat session and prompt the agent to use a tool (e.g., ensure the agent triggers `execute sql` or similar).
3. Wait for the agent to complete the task and provide a final answer.
4. Click on the tool execution step in the chat stream to inspect the details.
5. Watch the details displayed in the left-hand panel for a few seconds.
6. Observe that the screen starts to glitch, followed by the browser becoming unresponsive.

**Expected Behavior:**
I should be able to view the tool execution details in the left panel indefinitely without any graphical glitches or browser crashes.

**Observed Behavior:**
After clicking the tool execution log and viewing the left panel for a few seconds, the UI rendering becomes corrupted (screen glitches), and shortly after, the entire Google Chrome browser freezes and crashes.

**Environment Details:**

- ADK Library Version: 1.24.1
- Desktop OS: Windows 11
- Python Version: 3.13.9
- Browser: Google Chrome 144.0.7559.133

**Model Information:**

- Are you using LiteLLM: No
- Which model is being used: gemini-2.5-flash

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## 🟡 Optional Information

**Regression:**
This issue seems to be related to the new DevUI introduced in version 1.24.0, specifically the feature that allows inspecting tool execution details in the side panel.

**How often has this issue occurred?:**
- Always (100%)
(Reproduced 6 out of 6 times)