Add a warning for when targeting attributes are truncated

[AntoxaAntoxic]

🔧 Type of changes

• new bid adapter
• bid adapter update
• new feature
• new analytics adapter
• new module
• module update
• bugfix
• documentation
• configuration
• dependency update
• tech debt (test coverage, refactorings, etc.)

✨ What's the context?

What's the context for the changes?

🧠 Rationale behind the change

Why did you choose to make these changes? Were there any trade-offs you had to consider?

🔎 New Bid Adapter Checklist

• verify email contact works
• NO fully dynamic hostnames
• geographic host parameters are NOT required
• direct use of HTTP is prohibited - implement an existing Bidder interface that will do all the job
• if the ORTB is just forwarded to the endpoint, use the generic adapter - define the new adapter as the alias of the generic adapter
• cover an adapter configuration with an integration test

🧪 Test plan

How do you know the changes are safe to ship to production?

🏎 Quality check

• Are your changes following our code style guidelines?
• Are there any breaking changes in your code?
• Does your test coverage exceed 90%?
• Are there any erroneous console logs, debuggers or leftover code in your changes?

[CTMBNara]

    private Map<String, String> truncateKeys(Map<String, String> keyValues,
                                             Map<String, List<ExtBidderError>> bidWarnings) {

        if (truncateAttrChars <= 0) {
            return keyValues;
        }

        final Map<String, String> keys = new HashMap<>();
        final Set<String> truncatedKeys = new HashSet<>();
        for (Map.Entry<String, String> entry : keyValues.entrySet()) {
            final String key = entry.getKey();
            final String truncatedKey = truncateKey(key);
            keys.putIfAbsent(truncatedKey, entry.getValue());

            if (truncatedKey.length() != key.length()) {
                truncatedKeys.add(truncatedKey);
            }
        }

        if (!truncatedKeys.isEmpty()) {
            final String errorMessage = "The following keys have been truncated: %s"
                    .formatted(String.join(", ", truncatedKeys));
            bidWarnings.computeIfAbsent("targeting", ignored -> new ArrayList<>())
                    .add(ExtBidderError.of(BidderError.Type.bad_input.getCode(), errorMessage));
        }

        return keys;
    }

    private String truncateKey(String key) {
        return key.length() > truncateAttrChars
                ? key.substring(0, truncateAttrChars)
                : key;
    }

[AntoxaAntoxic]

I believe it should be truncatedKeys.add(key); instead of truncatedKeys.add(truncatedKey); in order to log the original key name